I just finished cleaning my bimini's inside and out. While they are drying on the back deck I got to thinking this would be a good time to give them a new coat of waterproofing spray. I ran out to the local Wal-Mart and they carry a silicone based spray. Not knowing if that stuff is what I want, I decided to check with my buddies at CSR for their input. What do you think, is the Wal-Mart stuff OK?