I started to make a rear seat yesterday. Went to the steel supplier and got 20 ' of .100 wall 3/4 x 3/4" square tubing and got the bottom of the seat mount almost done. It bolts to the front seat mounts and sits in the bagwell. I still have to weld feet on the uprights and finish the back support mounts. When it is all done just remove the 2 bolts and the whole seat assembly can be taken off the cart.