I make some really simple footpegs from square AL tube and scrap UHMWPE. Take a piece of 1"x1/16" wall sq tube and cut about two inces longer than form spacing. Cut slots in the AL the to fit the wicth of the plywood forms and spaced to match the form spacing. For the actual footpegs, cut square holes to recieve the AL tube into the poly, cut them whatever overall size you want. Slide the poly over the tube and fit the tube onto the frames wherever you want them. Lash in place. Make them adjustable using a knotted rope. I use a bungee pulling in the opposite direction to keep the foot pegs tight on the knots. I had pics but can't find them at the moment, I'll post if I find them.