Neat.Reminds me of folks using old electric pole isolators to lift cables off synthetic or synthetic bend carpets.You can find those a flea markets,antique shops,and Ebay and they (the isolators) work/look better and cheaper than many "pro" devices.The knobs would only worry me if they rang (material was resonant) or had loose parts.My argument with a lot of folks who buy nice looking Billy Bags or expensive synthetic racks and speaker stands is that nothing beats mass (add cones or points to isolate after you have established mass) and for me Sound Anchor with it's heavy iron can't be beat.But not only does Bob (no my cousin) Warzalla make SA heavy he knows where to put it say more mass at top of speaker stand for some low on stand for others and does lot's of design work for individual speakers.But cheap eats that get that mass in thier and don't cause WAF freak outs are great so ideas like this should tried and reported on.
Cheers
Chazz
Cheers
Chazz