Anybody used these? I' m starting to spread out a little, and not having those swing arms grab me when the Ol' Man is on a narrow tree sure sounds good. I' m worried they might be a little noisy if you put all the weight on the front and they try to straighten a little-might put some bending moment on the bolts/bushings. Any thoughts? Where' s the cheapest place to get them? I don' t want to buy a new stand that doesn' t have swing arms if I can help it, but I don' t like being limited to the bigger trees to avoid being " pinched."