I've gathered supplies to make a couple hoop houses this fall, and spent a bit of time this evening setting up things to bend the hoops and get everything "dialed In".
I purchased a harbor freight tubing roller a few weeks back, and played around with rolling the tubing to make sure it would work out. Its not as easy as I had expected, but works pretty good once things are set up well. I had problems with the tubing "corkscrewing" pretty badly at first, but after getting supports laid out I've been able to resolve that.
I rolled more tubes tonight, dialing in the curve I need to meet my goals of a 14' wide hoop. The 14' wide width should take about 22' of tubing, so, 2 full 10'(+6") pieces and then I will cut 2' sections from a full tube to finish out. I plan on elevating as little as possible from the ground posts- maybe 12"- 18" from the ground, adding a bit of head clearance to aid in fitting 80" tall storm doors. Overall size will be 14'x24'.