Being that I currently rent I do not want to put up any permanent structures, but I definitely need to expand my run with spring coming. I have rolls of chain link and poles that were hack sawed from the concrete. Being that that is the case the poles are a bit shorter than I'd like. Any ideas as to how I can make this work without using concrete? I half considered weaving some kind of chain or cord through the top of the chain link and anchoring it to a tree and a building, but I'd imagine it would have to be a pretty heavy gauge so that may not be realistic. I'm also broke as a joke, so bonus points for creative cheap solutions.