Hear is the engine stand jack setup for any one who like to pump their jacks all day.
It limits how far down you can lower the shelter due to the way it mounts. You can only lower it down as low as the jack is tall.
It sets on a piece of box that has a tab welded to it that pins to the leg and lifts the tabs on the sockets. (The part were the winch is.)
One problem I found with the jacks is one will all ways be short and you wind up doing some unsafe rigging to get it to work.
I found the winches on sale and bought the relays online for what I have in the jacks. I still carry 2 jacks just in case but I think 2 winches on opposite sides would lift it. Ill give it a try at haspin let every one know if it works.