Our garage isn't large, the ceiling (open rafters) isn't really set up for using a pulley system, and hanging it up over a backed-in Jeep doesn't work because of ... well, a number of issues.
This could well fit in the "You're Doing It Wrong" thread, but it worked.
View attachment 275587
The orange strap is there (one on each side) only in case one of the four primary straps lets go accidentally, to keep the top from falling on our boat since this thing is hanging over the back deck.
View attachment 275588
Eyebolts, extra large washers, nylock nuts, ratchet straps, and a couple of cut 2x4s with some foam wapped around and stapled. When I take this thing down, I'm going to run a couple of bolts through the top mounting bolt holes and back 2x4, and probably just clamp the front 2x4 to the top with a couple of quick-grip clamps so the boards don't move around on me.
There is an old gymnastics mat between the top and the rafters. When I ratchet the thing up to the point where it makes soft contact with that mat, it doesn't move at all. No swinging.
Like I said, I may have done this wrong or it may be overkill, but it works.