http://www.harborfreight.com/3500-lb...jack-3961.html
I think it's on special and with the ubiquitous 20% coupon, out the door was like $25.
It comes with hardware to make it swivel, but with the drop leg it seems much better to just mount it solid. Around here all the swivels get messed up. Even with the pin on a chain, it disappears, then someone uses a bolt or something and it starts tearing out the hols and leaning on it. before long the whole thing is junk.
I put one of these on a car hauler the same way, and so far it has help up pretty good.
Long arc, short arc, heliarc and in-the-dark!