I got those waves too on my first boat and to a much lesser degree on my second boat. Perfection is a journey right? I second the motion that your saturation coat should be nice and dry before you lay the glass down on the hull. If not, getting any wrinkles out is near impossible.

A trick someone showed me that helps the glass to lay flat and conform to your hull shape is to use a clean dry brush to brush and smooth the glass over the entire hull. Not sure why this works but it makes the glass nice and flat and it almost clings to the shape. Also it does not make the weave pull apart like tugging at the corners can. Sometimes your saturation coat may have a rough surface from bubbles that can develop from air escaping from the wood as the epoxy cures. The rough surface can catch the glass and cause problems getting the glass to lay just right. You can prevent this if you apply the saturation coat while the temperature is falling. In otherwords, saturate the hull at / after the warmest part of the day and allow to dry as the air cools off. Other than that just make sure you squeegee well to get all the excess epoxy out from under your glass. No amount of preparation can help you if the glass is floating on excess epoxy.

Good luck.
----------------------------
We are finally done with the Tern 14. All looks good for a first boat, but
: there is one issue that is bugging me. The fiberglass is wavy in a few
: spots on the deck and hull. The glass for the deck was cut from one piece
: and the wavy spots are in the same position both front and rear. I know it
: is just a visual thing, but improvement is key (my wife's Osprey is next).

: So here's a little history: 6oz glass supplied with the boat. Came in all
: folded up in a neat little square. So we unfolded it and wound it
: carefully around a cardboard tube. When it came time to lay the glass
: down, we just unrolled it and cut where needed. We poured and spread the
: epoxy with squeegees and everything looked good. Later we could see the
: wavyness when the epoxy was green. It fills up nicely when we use a foam
: brush to pull epoxy into the valleys. I would like to avoid having to do
: this in the future if possible. Is it just the way the glass is when the
: epoxy is not yet set, or can I somehow pull the glass to keep it tight as
: the epoxy sets up??

: Larry.

: P.S. I will have some pictures soon (hopefully this weekend) of the
: launching. Just got to figure out where.