After destroying my first CLC onlay by sanding to much after gluing it down, I carefully studied the instructions before attempting to install onlay number two. I found a conflict betweedn what came with number 1 and number 2.
The instructions that came with number 1, dated 6/19/08 state under step 2: "After sufficient drying time, remove all weights and the plastic sheet from the onlay. Lightly sand by hand with paper no coarser than 100 grit. Apply two or three coats of epoxy. Sand the area smooth and cover the shaped area with fiberglass cloth and apply two or three final coats of epoxy."
The instructions that came with onlay number 2, dated 6/20/08 state under steps 3 & 4: "3. After epoxy has cured, remove the weights and the plastic sheet from the inlay (?). If any sanding of squeezed-out epoxy is necessary, make sure it's with very fine paper. 4. Apply fiberglass and epoxy to the deck as directed in the instruction manual for your boat kit. Fiberglass followed by several thick coast of epoxy will hide the thin edges of the onlay.
I have installed my second onlay using the first method above ie. coating the onlay with two coats of epoxy before laying down the glass. It seems to have worked well as I have no bubbles around the edges.
However, I would like someone at CLC to weigh in here and clarify what method they really recommend. Meanwhile, the deck on my Shearwater 17 Hybrid is finally glassed and I am ready to attack the cockpit coaming. Planning to do something with my left over cedar strips. Lots of fun.