: I can feel underneath on the bottom of the deck and I don't fell anything. I
: can get a photo latter but anyone have a clue? I am not going to try to
: fix it till cold weather sets in. Having to much fun paddling right now.
: But it shure does ruin the looks of the boat!

Hey man- Let's get some perspective here- it doesn't ruin the looks of the boat, just the appearance of the finish! There are plenty of beautiful opaque finishes you can use to recoat with that will keep you from lifting the glass, or you could even consider either white or black graphite in epoxy as a coating. It will be super slippery and scratch resistant. It may not fit your original concept of the boat, but it will still be beautiful. If you can get used to the current flaws you'll have a lot easier time learning to live with a beautiful opaque finish. The greatest most glamorous yachts have opaque finishes...

I appreciate Rob's explanation, but I can't help thinking about the great numbers of people over the years who have built using PVA and aliphatic resin glues who haven't had a similar problem, so maybe there is a different explanation? Or maybe a more complex one?

Is it possible that in some cases there are air bubbles trapped in the glue because the joint isn't a perfect fit, and the combination of joint stress and heating cause outgassing of these bubbles?

I understand that dark finishes heat up more than light finishes, but is it also possible that bubbles are just as common on light finishes but are less visible on a light finish?

Poly glues may be a great way to get around the problem of creep, because they don't move once they're finished, but they also don't develop any strength unless the joint is absolutely perfect. Doesn't matter once it's in epoxy, but it still can potentially cause its own set of problems.

No offense Rob- I've read about this happening, I'm just curious how many people have had this happen to them? How common is it among forum readers?

m