Wavery -
The diagrams helped a lot. Thanks for taking the time to prepare them. They made me realize that you and I have been talking about entirely different things.
You are talking about the fore-and-aft forces on the hitch receiver that result from starting or stopping the rig. With a drop hitch, these forces produce the leverage you described, and the problem you described. I had not considered the forces in this fore-and-aft direction. Hitch weight is not a factor here.
I have been thinking of the up-and-down forces on the hitch receiver, which are related to hitch weight. And in fact, the E-trailer discussions that I linked earlier are all related to hitch weight. Fore-and-aft force is not a factor here.
You've given me a new perspective, and I will have to think about it for a while. Thanks for doing so.
Bill.
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