I've been quiet up till this point. So I guess, now it's my turn...
Glue... yea, I think there's a glue for every reason and every season.
I use polyurethane glue on the subfloor and other places that see extreme moisture. These glue joints are fully backed up by mechanical fasteners.
I used Titebond II on most of my woodworking, but if I were to do it again I would probably use Titebond III. These joints are typically backed up by biscuits or screws.
Yea, can you tell, I like redundant fastening? Anyways, you can probably use what ever glue you are comfortable with, as long as there is some water resistance. And if you are not sure about a joint, put a screw in it!
Above all have fun, and don't sniff it too long!
Mike...
The quality is remembered long after the price is forgotten, so build your teardrop with the best materials...