The Bonaire chat board is http://www.bonairetalk.com. Resorts range from top of the line to smaller facilities. Walk-in snorkeling is possible just about anywhere and there is one very good boat trip - the Woodwind catamaran. As for clothes optional, sorry but there really is none. Sorobon Beach resort went textile about 3 years ago. I've heard that some very small guest houses may be c/o but a web search normally comes up empty. I'm a seven-time visitor and past guest at the "old" Sorobon. If you're divers, I feel the best independent (not captive to a resort) dive shop is Dive Friends Bonaire. Headquarters is the Yellow Sub location. They'll take excellent care of you.