Easy to make, not as easy to make for a cramped shop so's you could disassemble it. Be nice to see plans. Engine hoists can work, but the center of gravity of these things can be a problem--tough if the object yer lifting don't fit right between the legs of the hoist. Sometimes the help I procure is dedicated to just standing on the back half so it don't tip over. :) The engine hoist slips readily under the pickup, readily lifts s*it off.
*Setting it down is the goddamm problem. * :( HF has a decent one, long reach, tallest height I've seen listed. Gantry would indeed be nicer.-- Mr. P.V.'d formerly Droll Troll Party Nominee, IPPVM Independent Party of the Proctologically Violated®© (M)asses "That's proly not a hemorrhoid you're feeling.... " entropic3.14decay at optonline2.718 dot net remove pi and e to reply--ie, all d'numbuhs