Here is an up-date on bending that 2 1/2" pipe for a boom pole. Thanks to everyone for their suggestions. One shop would have bent it for $40 but I didn't want to spend that. I didn't have a large hydraulic bender on hand so I went to both a muffler and an electrical shop and neither one wanted to touch it. I guess that I don't blame them as the wall thickness is pretty good on that size pipe. I decided to bend it in a tree crotch and bent it until it started kinking in two areas. A helper holding the pipe in the proper place in the tree would have helped with that part of the bending. To finish the bend I used a chop saw to saw about 1/2 way through in the places that I needed more bend and used a come along hooked on each end to force the bend. Then I welded up the sawed areas. I found out that even though I had a manufactured pattern to look at, it takes some effort to get everything lined up properly and a quite a bit of hard work cutting, welding and cleaning it up. I still think it was worth building as it is heavier duty than the bought one. I had all of the materials on hand in my miscellaneous scrap. It ended up weighing 25 lbs more than the store boom.