Henry, good point about routing the wires along the port side. That makes the most sense.
Chris, does your 12V DC breaker panel have any extra spaces in it for another breaker? There are some pretty heavy gauge wires already feeding that - possibly a 6g or 4g. Check your wiring diagram to double check me - or just open up the panel. Maybe that's enough for your application? Then you could run the thruster wiring from there.
