I'm considering putting a slideback bed on a hdt, and have a few questions, i think a few people on here have them.   Questions: 1 how easy are they to mount? 2 when buying a used bed (cheapskate here) what should i watch out for? 3. How long does it have to be past the frame to land on the ground? 4. If it is too short, will it be a foot off the ground when tilted, or will it just be really steep? 5. Does anyone use the hitch that is mounted to the slideback? Or mount another to the f