kaolinwasher
Well-known member
A round shaft creates turbulence and drag when swinging thru water , this tires out the detectorist, but the answer swims buy him in the water , coils with openings and 90 degree angles create more turbulence under water this creates more resistance . so shy not make the shaft like a sharks tail feathering to a sharp point so you can swing the shaft and coil thru the water with ease from left to right , and the coil should be like a stingray , no openings but feathered out on the edge, hope you can understand my crude drawing , it would help that shaft and coil just glide thru the water