Re: Loading a bike in pick-up
I use two arched ramps, no ditch, no motor, no friends. The largest I've loaded myself was a Concours. The sportbikes are really easy as they are so light. Get a rolling start, as the front end gets up past the tailgate, I stop if it's really heavy, to get up on the truck to get a better push in. It also helps to have someone on the right side to hit the rear brake to hold the bike while you get on the truck.
I have a Tundra 2wd lowered a few inches to make it easier all around.
Raised 4wd trucks are not very smart when it comes to trying to roll a 500lb bike into them.