Free: Contests & Raffles.
I used 4 ratchet straps and foam floatee noodles on cornersI lift with my back in center to break the seals and then crank up the ratchet strapsI did this on a full size Leer on an F250 longboxeasy
This looks pretty simple. If you do a rack, you could attach it at 4 points to spread the weight.
The guy that built my pole barn said don't use the trusses to suspend things.They are not designed for that kind of load. Just a friendly warning - I'd hate to have your canopy come crashing down!
This one lifts over 400lbshttp://www.caplift.org/