I have a 2001 Chevy 4x4 extended cab shortbox truck. I cut grass residentially and don't really want to haul a trailer if I don't absolutely have to. Is there one of those folding tailgate ramps available that will reach the ground without too much slope? I hope to drive a garden tractor up it. If not I am open to suggestions as to what the best set up is for multiple on off situations. thanks.