Of the three hitches that I have, the most dificult would be the Drawtite with 1200 lb trunion bars and snap up brackets. All the parts are dirty and heavy. Lots of up and down inserting the bars. Then adding a sway bar, or two. Pulling on snap up bar can strain your back.
The other two (Andersen and Blue Ox sway Pro), the one that requires the least amount of bending is, the Blue Ox. Hitch head is haevy, trunion bars are somewhat lite and easy to slip into position. Chain tension is done with one pull (each side) on the wrench. Pretty much like snap up brackets, except, the lifting can be done with your legs, instead of your back. This one is cleaner than the drawtite. Greasing for the trunions bars, is done (with a grease gun) through grease zerks in the hitch head.
The one that is the lightest and easiest to lift / slide into the receiver is, the Andersen. This one is also the cleanest, as there is NO lubrication of any kind. Chain tightening requires bending and pulling on a wrench or ratchet handle. This one would probably be best for a bad back. After coupling truck / trailer and lifting with the tongue jack, one could sit (on a bucket, stool, or the ground) and finish the hook up, with a long handled ratchet and maybe an extension. Drawback to the Andersen is, it is a little soft on weight distribution. Depending on your truck / trailer combination, it may not transfer enough weight.
Use of the tongue jack, to raise trailer / truck, is required with all of them.
Use of an extension on the wrench / snap up bar, or ratchet handle, makes the job easier.