As for the hump/pump area. With my FW ski we used 2 layers of 8m in the foothold with 1 layer of 8 on the pump hump. Really worked out great. Forward tray just has 1 layer of 8. Then the top of the foothold has 25 mil ..... When you kick in your in!
Got the bottom all wet sanded & buffed.... Looks great for cheap paint
Started working on my footholds today. Cut them out in the rear, going to foam the wings some & bring the footholds back some. I want them more direct rear kick in foothold like my Rickter had. Also wanted them further back for a surf ski