I've gotten some great help here in the past reading threads and I got a lot of encouragement and good advice when I tore the rotten front box off our 1997 Coleman Sun Ridge and rebuilt the front wall. Well, I'm hoping people will be willing to chime in again and help me with their expertise and their thoughts. I have some Grizzly Grip in transit to me now, but first I want to shore up the roof on this same camper that has started to sag. I've searched all through the threads and seen some good examples of homemade braces made from unistrut. I have some old angle iron type bed frames, and I'm considering welding that up into a brace. I expect it should be plenty strong. I can't really foresee any issues with using this instead of unistrut, but I wanted to get some opinions and to see if anyone out there has used something other than unistrut to make their braces.