Velcro makes what they call , round 3/4" (5/8") Hook & Loop, self adhesive stick on's.
I got some as a sample in some roll package of Velcro.
I put a dot of the Loop side at the top and bottom edge of my HC, with the Hook side attached.
Pealed the covering from the hook side and the HC . I centered it up (it fits well), and pressed it to the apex of the round leg.
Snug as a bug in a rug.
I just let the coiled wire drape naturally back and up to my Southward facing Gemini 2? controller. I have the Velcro on both the S/E and S/W legs. (Single leg North)
If you buy the 1" wide Velcro sticky back, you can cut squares and mount them diamond shaped to your tripod, too.
Remember is your friend to clean up any sticky adhesive when removing stuff.
--
SonnyE
(I suggest viewed in full screen)
