In May, I had completed the top and rear hatch surfaces and had them propped them up with a board on the ground. I moved the trailer forgetting to let the hatch down first and when it fell, the top hatch turned into splinters when hit it's stops. Various obligations since then. Now I am back to work. Remade a new top hatch with some strength improvements. After creaming the first hatch, I am aware that I must have the hatch movement carefully worked out.
So yesterday I designed a linkage system that allows the user to simply lift the two piece hatch to open it. It stays in place once opened. To close just pull down on the back of the rear lid to release and support the hatch as it closes. I will post a video soon.
Today I will replace the sheet rock screws and plywood scrap version with oak and 1/4" 20 screws with Nylock nuts.