Here in SoFla there are no hills, rarely even sloped driveways. I use a combination of 6' ramps bolted together to give a ramp 16" wide and a pair of the plastic car ramps. Steel ramps go from the tailgate down to the car ramps. This gives a slope low enough that the sidestand spring doesn't catch, and a wide enough ramp to put any bike in my truck with confidence (not riding, pushing). A milk crate next to the ramp eases the step up into the bed.
Took a buddy's Triton down to Wes' shop yesterday using this method - worked like a champ. Also took his '74 up to Barber along with my Ranger back in October, my Speed Triple and 73 up to North Carolina, the Ranger and 73 up to the Catskills for the '11 rally and to Daytona last year.
I also use the roll-in stands from Harbor freight - not the tubing ones but the big, heavy angle iron ones.