I am redoing the interior of my 20' bow rider wake board boat and curious what people love for new vinyl treatment and care. Is 303 aerospace the best?

It's what I use.

For the last nine years since buying my 2006 292 new I have used 303 Multi-Surface Cleaner and 303 Aerospace Protectant. When using the cleaner I also have a separate spray bottle of distilled water and wipe up any excess cleaner. Then follow-up with 303 protectant. Interior still looks and feels brand new.

http://www.goldeagle.com/product/303...urface-cleaner
http://www.goldeagle.com/product/303...ace-protectant

x2

That's the only stuff I use.

Ditto