Here is how I keep my walking boom from spinning at the end of the wand. The hardware is 2 U-bolt pipe hangers for 1/2" pipe and 1 backup plate for 2" pipe. That is the long piece going between the two U-bolts. There are wing nuts on the U-bolt that clamps to the wand, so the boom is easily detached for transport. Everything is stainless steel. Expensive, but not likely to corrode any time soon.