I know this is a subject that has been covered in depth, but being a new CTX owner had me considering a harness/sling. It's a bit heaver than I'm used to and a way to make it a little more comfortable and decrease the fatigue could only help. I found a number of options from DIY hydration backpack mods to DIY simple straps and bungee cords. As far as buying a dedicated Metal Detector sling, the top end of the spectrum seems to be Minelabs Pro-Swing (around the $130 point) down to to simpler setups in the $25 range. One that got fairly positive feedback was one of the more recent additions to the "sling" arsenal I found was the Limbsaver brand. FWIW they seem to have a fair amount of positive remarks throughout the web. Reports seem to vary depending on each individuals height, what detector, and what part of their body hurts when they swing a detector for hours. If you are thinking of one of these, you may want to look at the harness the same company makes for string trimmers. From my observations there seems to be little if any differences (at least that would affect swinging a detector vs a trimmer), but the ones called "weed eater slings" by the same company are a few dollars cheaper. Under $20 on Amazon. My guess it that folks are willing to spend more for an accessory for their high dollar detector than for their $100 weed wacker. I know this issue has been discussed many times before, but I'd be interested in any specific experiences regarding weed trimmer slings, vs detector slings. Especially this brand/model.