I carried one in my stock trailer for 20-25 years.Every time I needed it which was darn few, it would never do the job I needed done. I finally threw it in the trash.Piece of junk.Might be ok for light weight work like jeep or such, but sure are useless for heavy pickups or trailers
I disagree. I know of a few examples where a Hi-Lift was successful with heavy trucks.
One time, I found some flat landers stuck up to their frame rails in snow near Hell's Canyon. Diesel crew cab loaded with people. It was around June or July, hot and sunny, but some areas don't clear until late July. Cascade Concrete, or basically being stuck on a giant snow cone.
Do the mire resistance calc for that one, and there was no pulling them out with my little SUV. Or winching them out with most equipment.
Guess what? Easy recovery with my Hi-Lift and Lift Mate. Lifted the rear end, threw some rocks and logs under the tires and they were unstuck. I made them do the work
Another time, my buddy found a diesel crew cab stuck up to his frame rails in mud during spring turkey season. Tried winching, but pulled down several trees. Once a suitable tree was found, the wire rope broke. Twice.
What got him out? A Hi-Lift. Made a believer of the Hi-Lift, out of my bud.
Another time, I had my 3/4-ton GMC slide off a snow covered gravel road. Cascade Concrete again. No trees to winch from. A buddy tried pulling me out with his Taco. That wasn't worth the time or effort, as it just didn't have the ass or traction. Again, Hi-Lift to the rescue.
A Hi-Lift isn't the end-all, be-all tool. It's handy when used within it's capability. And sometimes, there aren't many other options available
Now, if one gets hurt using one, then that is the fault of the operator and not the tool.