Finally got my summer setup finished the other day. The drop in is 5' high with an 8' ramp. Rail is 1'6" tall and 10' long. Everything is pretty solid. This thing only cost me about $10 which is what the turf cost. All the lumber I got from construction site dumpsters, so some of the wood is warped, but that doesnt present a problem.
I'll probably fix the tranny to make it smoother as well as the ramp onto the rail.