Even though the CTX 3030 is well balanced, the 17 inch coil can be a challenge for long periods of time. The Pro-Swing takes out all the effort. The only thing I don't like about any harness is that you feel like you're "tied" to the detector when you get down to dig a target. Granted, it does disconnect easily. But apparently the CTX 3030 wireless module has me spoiled!
Once you get all 8 of the possible adjustments made, it fits like a glove. I've used several different devices over the years. But most of them felt like you were swinging the coil from the end of a bungee....... which is what you are doing. The J-strut design of this model is much different. The weight of the detector (primarily the coil) is transferred up to the end of the bungee that fastens to the shoulder part of the harness. This, in turn, is supported by the J-strut, which rests along your waistline, on your hip. When you consider the wide dual straps and back section, lined with breathable mesh type fabric, and a full harness that is stabilized at your waist and across your chest.....like I said, it fits like a glove. HH Randy