my goal when it is all set up:
1. trailer level
2. steer axle weight is approx the same as unladen to perhaps a little
light. In other words, about 80% to 100% FALR(verify at CAT scale)
3. rear of the truck will squat a small amount compared to unladen
To hitch up:
lower coupler onto ball.
Raise tongue and back of truck with tongue jack high enough to easily tension bars.
Retract jack. Go drive.
Again, the scales are the easiest way to confirm good setup. Raising the coupled trailer/truck in order to easily connect bars is best safety practice.