I admire you guys for pushing your bikes up into the bed of these ridiculously tall trucks. Also doesn't help that I'm on the shorter side.
I have a dirt bike trailer for times when I'm bringing more than 1 bike, but for transporting just 1 bike, I made the switch to a Moto-Jack-Rack.
It literally takes me 1-1.5 minutes to load or unload and absolutely no straining to get it done.
The older I got the harder it was to push it up that damn ramp, especially at the end of the day.
Here's a short loading video if you've never seen one.