I gotta be honest here. This did not go as well as I would have liked. The bottom of this hull is curved where it meets the transom, and with the inverse angle of the transom, the glass did not want to conform to the curves. Chopped mat does not like outside transitions. It will do OK on an inside corner, or radius, but trying to get it to lay smooth over an outside corner did not go well. The more I tried to get it to lay, the worse it got. The adhesive that holds mat together is designed to dissolve in poly resin. I ended up with gooey hairballs. I was trying to lay up whole sheets, from side to side, completely covering the transom and tying it to the existing hull. I wanted to lay cloth, then mat, then cloth again, mat again, more cloth. I wanted a 3 layer cloth lamination, and hadn't caught on to using styrene as a thinner to roll the resin and glass. Another newbie mistake was to take the roller right out of an acetone bath and try to roll resin with it. The batch was just starting to kick and I got in a hurry.It wrecked the 3rd layer. Chuck the roller, and put on a new sleeve. The 3rd layer had to be ground back off later.