Well yesterday I used a step stool. But what I plan on doing is standing on the tail gate with the back window down, to put the bike on/off. Then stand on the wheel to tighten it on.
I'd just put airbags on your truck so when you get to the trail you can just push a button....and .......pppffffsssssfffffffftttttttttt......you're truck will be slammed on the ground :-k