parking prawl? is that a part of them newfangled autermatic self shifting gizmo's? what do they call them, "turbo hydromatic" or something? i think ive heard them advertised.
yes, the ramps with legs are the way to go. its pretty easy to figure out what the best way is, just go look at any real trailer's ramps, and you find spring assisted ramps with support legs. you will also find the "slider tubes" as mentioned above. the key is to leave them somewhat loose, allowing about 2-4 inches space between them and the ground, that way they wont be tight against the ground once loaded.