I have been using Zymoil(sp) and 303 Protectant

Interior cleaning vinyl: Tuff Stuff, yellow bottle sold at Walmart. The best stuff I have ever used.
Gelcoat: Half water and half vinegar

For vinyl I use Fantastik, it seems to work well. On the glass I use liquid glass. I've used it forever but I haven't tried anything else.

Krazy Kleen is the best cleaner of fiberglass. Nothing else comes close. Use it once and you'll be hooked.

Just never apply directly to a dry deck. It must be diluted or it will leave a mark.

I totally agree with Intolerant1. I use Simple Green for everything! It works awesome, will not damage any type of material and is "environmentally safe". :D

I use car wash that dosnt remove wax if i do want to remove heavy soil and wax Simple Green is my choice... is that a TV camera over there:D

Yeah, I have never used it to wash my boat. But I use it on everything on the inside.