Dan,
You are really going to enjoy towing with that Hensley hitch! Congratulations on a great purchase. :)
To hook up, especially the first few times, you will probably need to get out and look several time to get things lined up correctly. I use a mirror that is attached to my tailgate to eliminate that and can usually hook up with only one GOAL to check the height of the stinger/hitch opening.
When you have everything lined up correctly, then just back into the hitch until the truck stops. You will know as it is a sharp "bump".
Get out and draw up the "over center" latches, pin them, and then complete the rest of the hookup (WD jacks, chains, emergency cord, light cord). It is best to crank up the WD jacks/bars before you let the trailer down on the hitch so it will not take so much effort. This is done AFTER you enter the hitch and latch the overcenter latches.
You can crank up the WD jacks as far as you want. It will draw up your bars quite high and this is fine- unlike a normal hitch where the ends of the bars need to be level or slightly pointed downward.
As far as the actual towing, you will find that it seems very smooth and quiet. The trailer will follow the tow vehicle very closely and you don't have to worry about what it is going to do to your handling. You will probably find it easier to back up also.
When you unhitch, make sure you release the tension on the bars via the jacks before you do any other unhitching procedure. Chock the trailer wheels. Release all the tension on the WD bars via the jacks until the bars are "sloppy loose". Then release the over-center latches and put your finger on the top of the shank right where it enters the receiver.
Crank down the tongue jack to raise the tongue of the trailer JUST UNTIL you feel slight movement in the gap between the stinger and the receiver with your finger. Stop the raising of the tongue and unhook everything else ( elec cord, chains, etc.).
All of the weight is now off of the hitch and you should be able to pull out. After pulling out of of the hitch, LEAVE THE WD ALONE!
This way, your hitch will be in the same attitude as it was when you unhitched and will be ready to hitch up again. The only thing you will need to adjust will be the tongue height.
Hope this helps you out. Good luck and remember that it gets easier every time you do it! :)
Barney
