aczlan, no pics of the wheel lift but all I did was slide a piece of 2" tubing into my hitch, already drilled for the pin, used a piece about 10" long. I then cut 2 pieces of tubing 48" long and 2 pieces of 2" channel 12 in long. I built a 12 X 48 rectangle and then added the hitch piece midway on the 48 in side. I did cut another piece of tubing to tie the front and back runs together.
Just think of it as a short piece of tubing coming out of the hitch and a 12 X 48 rectangle welded to the stub out piece. I can back up to a lawn mower or garden tractor and let the hitch/wheel lift sit on the ground, roll the mower across the back piece of tubing and then pick it up like a wrecker does.
I measured 4 different mowers, cub cadets, 4 wheeler to determine how wide I need this thing, 48", and them drilled holes into the underside of my tubing so I can take 2 short light duty 1" rachet straps and tie the tires down, just like a wrecker does a car.
I did not build a swivel on my wheel lift. I have lots of room and can make wide turns to get around that. I also thought that if I did need a swivel I could add it to the front of what is there now so it swivels in my turns. But it won't be used a lot, was a quick weld up job to move a Pa Panzer out of my shop and a cub cadet into my shop. And to go retrieve the lawn mower if need when it's too far away to push.
If it was a daily used tool I'd definately put a swivel in it. I wanted it as short as possible to use on my cub cadet, it has a hand operated lift on it and by keeping it short I think I can lift a mower or garden tractor by hand. If it swiveled it would have to be longer to keep it off of the rear tires of the pulling tractor when turning. The longer the rig, the more it takes to lift it.
I haven't used it yet. I may see where the swivel has to be added but I think it should work fine like it is, just do long sweeping turns.
If I do need a swivel I'll use two spring hanger brackets used on mobile home frames. I already have them. I use them a lot in building things using 2" tubing where I pin them together or swivel. Already made and about a buck each. I can add length to the whole thing and let the short existing piece that goes into the hitch be where the swivel attaches and add another piece of tubing to go into the hitch.