Don the ring is made out of an empty 1 Gal. plastic paint can and you can get three out of one, the means of rotation is left up to one's imaginarion mine has a 1/4 stainless steel rod that rides on top of a ball bearing inside the sleeve. The sock is made out of the cheapest home garbage bags one can find, very thin in Mills and very responsive to minor wind changes. The seam of the sock is Scotch Taped together and it is also attached to the ring via Scotch tape and they are very durable in adverse conditions including rain.
J.Louis
J.Louis