Mark,
I actually cut the poles off at 22'. I put 6' in the ground and 16' above the ground. The same time I put in my pole barn I had the guy that dug the holes for that, with a 14" 8' auger. To stand the poles up I used my skidsteer. Then to put the pole on top of them i rigged a pulley up to each side and pulled one side up and had a friend hold that one and then went to the other side and pulled that one up. I had notched out the bottom so they sat right on top really nice and then I put the spikes in and put the steel straps on. I also put my trusses up on the pole barn and house with the skidsteer. I made a piece that I put on the skidder that I can clamp the truss on and then lift it up. Worked really good. Anymore questions just give a holler, be glad to help. I just bought another 57 acres yesterday so it looks like more work ahead!
Richard