Ken, are you talking about something like the ones that HF sells?
http://www.harborfreight.com/12-ton-capacity-pickup-truck-crane-with-cable-winch-61522.htmlI've thought about getting one of those for the once a year
that I might use it. Couldn't hardly buy the materials to
make one for that kind of money.
Wonder if your mounting point would be solid enough with a
Class III-IV receiver? Seems like it would be an orful lot
of leverage on that little square tube when loaded.
dg