yesterday i used a hole saw and cut a hole in each gunny at the top and added more ping pong balls (never took pics, sorry). i also fixed the insert for mounting the pump. today i did my final layer of carbon fiber in the tray. tomorrow after it sets i will trim the edges and do any sanding and it will be ready for turf. it looks like there is a big square patch under the carbon fiber in the middle. its an optical illusion it is not really there.