I had posted earlier on a fix for centerboard well flaps using vinyl floor base. Did not work out to well, vinyl to soft with little tensile strength. Trailer roller (H cross section) chewed it up. Bit the bullet and bought the kit from Catalina. Bit of a problem their too. The plastic pieces that hold the sailcloth gaskets in place came predrilled but did not match up with screw holes on my boat. I measured pitch of holes in the pieces provided and they varied enough that they did not match enough that the plastic piece could be attached properly. Pitch should be 3" exactly but the measured pitch in the plastic piece varied from 2 17/16" to 3 1/8". I have had to drill new holes to make it fit.