How To Bring The PWC Along

Discussion in 'General Discussion' started by Josh P, Jan 21, 2021.

  1. Josh P

    Josh P Member SILVER Sponsor

    31
    Oct 21, 2020
    London, Ontario, Canada
    2000 460 DA
    Cummins 6CTA
    Hi Everyone,

    Does any one carry a PWC on the swim platform or tow one behind? I'm thinking about buying this product that I came across. https://magicmarinetow.com/

    Any thoughts would be appreciated.
     
  2. Joint Custody

    Joint Custody Well-Known Member GOLD Sponsor

    538
    Sep 20, 2017
    Lake Powell Utah
    2001 460 Sundancer
    Twin Cummins 6CTA8
    0BD64EFD-A67F-44E5-AFD4-256C1D7E3DD7.jpeg C22C1D6E-B8E6-41DF-AEC8-CDC2BF9294D6.jpeg We do both.
    I have a wave runner and a 14ft Seadoo jet boat.
    When we take the little boat and the wave runner we put the wave runner on the swim deck. When we dont have the little boat we tow it.

    If towing it you need to add a shut off valve to the intake water supply or you will hydrolock the engine. It is easy to install and you can buy the valve from any hardware store.

    We are on a lake so conditions for towing are good I could see using something like you showed if in the ocean as the water isn't as flat as a lake.
    If you do tow it make a bridal that connects to each cleat and have it long enough to clear the swim deck. Then off the bridal connect a 75ft" or more" long line to the PWC. I like to tow mine about Twenty five feet back from where the prop wash breaks.
    Make sure to use floating line for both.

    The rope I use is the same that you use on jeep and rock crawler winches. It is expensive but very strong.
    It is called dyneema
    https://www.knotandrope.com/collections/sailing-boating-rope/products/amsteel-blue-dyneema

    I like the system that you showed however I like a clean swim deck so dont think I would like the hardware on it.
     
    Last edited: Jan 21, 2021
    RBB likes this.
  3. RBB

    RBB Well-Known Member GOLD Sponsor

    833
    Dec 18, 2019
    Kentucky
    2004 390 MY
    2019 Sea Doo GTX 155
    2020 Walker Bay Venture 14
    Pelican Kayak
    8.1’s straight drive
    60 hp Honda
    I looked at that, pricey considering the hardware. Ended up buying a Towdster $750. Works like a charm. We tow on the Ohio River so conditions are not bad.
    The towdster we use for the seadoo, I had topknott make a custom harness for towing our walkerbay venture 14' with a 60hp honda.
     
    Last edited: Jan 21, 2021
  4. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    How heavy is the PWC?

    The davit system in this link can support up the 800 lbs. I think they use a Sea Doo Spark in their photos. https://www.dinghydavits.com/shop/print-1-e96jk

    I bought a different davit from them for a RIB and found it very robust.

    upload_2021-1-21_15-47-24.jpeg
    upload_2021-1-21_15-48-23.png
     
  5. ocgrant

    ocgrant Well-Known Member GOLD Sponsor

    Dec 31, 2006
    Miami / Ft Lauderdale
    H2O Therapy
    2006 Sundancer 48
    Novurania 460
    Yamaha EX-R
    Cummins QSC 540's
  6. ocgrant

    ocgrant Well-Known Member GOLD Sponsor

    Dec 31, 2006
    Miami / Ft Lauderdale
    H2O Therapy
    2006 Sundancer 48
    Novurania 460
    Yamaha EX-R
    Cummins QSC 540's
    Hurley H3O for me
    IMG_1726.jpg
     
    Jaybeaux and Blueone like this.
  7. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    Try this video.

     
  8. ocgrant

    ocgrant Well-Known Member GOLD Sponsor

    Dec 31, 2006
    Miami / Ft Lauderdale
    H2O Therapy
    2006 Sundancer 48
    Novurania 460
    Yamaha EX-R
    Cummins QSC 540's
    Interesting but that would not work in the ocean nor on my boat with the tall swim step.
     
    b_arrington likes this.
  9. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
  10. HawkX66

    HawkX66 Active Member

    436
    Jul 27, 2020
    SE Virginia and Mass
    "Tread Knot"
    1997 Sea Ray Sundancer 290DA
    454 L29 Carb w/ Bravo III
    "Another special feature of the H3O davit is the adjustable and removable winching system. The stainless steel retrieval arm is adjustable from 3′ to 6′, depending upon the length of your tender, and is easily removed for storage while underway."
    I'd love to be able to have something like this for my Seadoo on my 290, but I just have the factory swim platform and I'd also have to wonder about the weight being an issue on a "smaller" boat like mine.
    The price on a couple of these are just ridiculous for what they are. I'm not talking about the aluminum ones that actually have a little bit of engineering involved.
    The ones that are towing 100' behind the boat I think are just insane. You can barely see the rope in the pic nevermind if you're a kid on a ski jumping wakes. Should they be? Maybe, maybe not, but they're kids...
     
    Last edited: Jan 22, 2021
  11. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    Hurley sells an extension for the H30 as well. Quite spendy...you could buy a spare SeaDoo spark for what they get for the davit and the extension :)

    [​IMG]
     
    HawkX66 likes this.
  12. ocgrant

    ocgrant Well-Known Member GOLD Sponsor

    Dec 31, 2006
    Miami / Ft Lauderdale
    H2O Therapy
    2006 Sundancer 48
    Novurania 460
    Yamaha EX-R
    Cummins QSC 540's
    Yes, I have the electric winch package and it takes me 3 minutes total to get it in the cradel with little effort. The whole assembly pops off th swim step and stores away when i don't want it on.
     
  13. Timeflys

    Timeflys Active Member

    344
    Dec 7, 2013
    Thousand Islands, Ontario, Canada
    "Frequent Flyer"
    2002 Sundancer 360
    Merc Horizon 8.1s
    I have seen Seadoos mounted on swim platforms of older boats and wonder if the boat designers ever anticipated to have 900 lbs (throw in a +400 human lbs) hanging off the back of the platforms?? It must put tremendous pressure on the attach bolts for the platform.
     
  14. dtfeld

    dtfeld Water Contrails GOLD Sponsor

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    Axiom 12 MFD
    Cat 3126 V-Drives
    b_arrington likes this.
  15. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
    Same question as Brad’s about weight. We have the same davit for our 290 Zodiac RIB and it seems like it’s straining the winch. Sounds like the electric winch option needs investigating.
     
    Last edited: Jan 22, 2021
  16. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
  17. kindredspirit

    kindredspirit Member

    54
    Sep 1, 2009
    Lake Erie, Ohio
    2002 Sea Ray 410 DA
    8.1
    I've been dealing with this same problem for about a year now! Sea Ray says the platform on our 410 is only rated for 500#'s which is at the centerline of the platform. The davits that hold the weight aft of the platform multiply that weight significantly and I was advised against using them for our dinghy which is about 450 lbs fully loaded. There is also the challenge of how do you get all that weight up on the platform? Our platform sits about 15" above the waterline. Definitely check with Sea Ray regarding platform capacity prior to getting too deep into this.

    I'm curious about the Magic Marine Tow also. I like that it keeps the weight off the platform but my concern is that it is going to hold the Dinghy right in the trough behind the boat. Would it fill with water back there and swamp? I also don't want a bunch of hardware left on the platform when I'm not using it.

    I read where someone had pulled the bow of their dinghy/pwc right up on the platform and secured it there but I never found much information on it. I don't know if they built a cradle for it to sit on or how they protected the platform. I think the guys that tried that are on this forum but not sure. I always thought that this was an interesting idea.
     
  18. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    Two different use cases. I had the undermount arm style for the 3, and I'll be adding that to the 37 too.

    The hydraulic item is the new Sea Step from Sealift, which I am planning to add. That's a hydraulically-deployed set of under-platform steps to ease getting back on the boat from the water.
     
  19. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    Me too!
     
    dtfeld likes this.
  20. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    I did some back of the napkin math before moving forward with my platform/dinghy. If you do nothing, use the existing mounting strategy, going from the OEM platform to a 44" aftermarket platform while also planning for a 500lbs dinghy the worst case load on the backing plates goes from round about 30psi up to 70psi. A big increase. But that also assumes the dinghy is 100% loaded at the aft edge of the platform which is not entirely realistic.

    Judicious use of larger backing plates can improve the situation. So too can the use of more, better located bolts. But at the end of the the day the Sea Ray spec says the back of that boat can support roughly 625lbs stock (ignoring torque) using 12 thru-bolts and maybe 4-8 square inch backing plates. The move to 750+/- lbs isn't "dramatic" if smart about attachment strategy.
     
    Last edited: Jan 22, 2021

Share This Page

Show Sidebar