You should consider fixing the bubbles. They are not a big concern, but they could cause some problems down the line. The will tend to trap water and they are a weak point. A quick and ugly fix of sanding and putting on a oversized patch will do the job.

> I glassed the under side of my Guillemot 17's deck today and have just
> decided that I probably won't need air bags as there are enough air
> bubbles to keep the boat afloat. Actually, it isn't that bad, there are
> about a dozen fingernail sized bubbles, all on seams between strips. They
> weren't there an hour ago so they seem to be outgassing from where I
> didn't fully fill a crack or a staple hole. I also have a lot around the
> coaming where I couldn't get it to lie down no matter what I tried. I
> didn't get any of these bubbles when I did the outside and inside of the
> hull or the outside of the deck.

> I know that I have to fix the coaming area and I will cut and sand
> tomorrow and put some new chunks of glass on. My question concerns whether
> I need to cut and fill all of the other bubbles or can I leave them? Will
> they allow water to get to the wood? Since they are on the underside of
> the deck I am not concerned with appearance.

> Thanks, John