Is there really a need for 4"x6" or 4"x4" wood cribbing under a plastic dica all thing's being equal as far as soil types? Is 36"x36" or so the same no matter what,unless you need the ht. to level up. Would'nt they be easier to set up that 4"x6"'s My telebelt has monster pads built right in so it's not much of a big thing Terry

36x36 is 1296 sq/inches anyway you look at it unless there flexing to much I dont see the need unless you make your footprint bigger 4"x6" x 48" that would make sense, if its the same size I dont see the point unless your trying to keepm out the mud or you need the heighth.I hope I understood what you were asking