: All good points.

: I know it's purely anecdotal, but I've been using PU in SOFs and paddles, as
: have many others here, with good results. It seems to be completely
: waterproof. The only problem I've heard of was from one person who applied
: an oil finish before the glue was completely cured, which seems like a
: pretty obvious no-no.

Sometimes anecdotal evidence has to be used in the absense of conclusive "scientific" evidence. Perhaps a poll could be utilized to determine how waterproof PU glues are. I don't know if this site offers the ability to poll, but a poll for boat builders, in general, may determine with pretty good scientific reliability how waterproof PU glues are.

Just a thought,
Paul