I just picked up my WM RIB 350 the other day. I plan to outfit it with a console and a bench seat I got off of craigslist. I am planning to put a 20HP Yamaha on it.
I have owned a half dozen of RIBs and I have a 10 foot Avon high pressure floor model and a 21 foot Zodiac Hurricane. My worst experience with with a Zodiac 380 which the glue was separating from the bolt rope.