Best way to connect BDR Cones to equipment?

I have a set a BDR Cones under my Classe amp and cd player, but they are not connect to the units themselves. Some time ago I read where cones should be place under strategic spots like transformers, cd transports, etc. The only problem there is no way to securely fasten them to the units at the spots with threaded screws. I thought about using double stick tape to keep them in these locations or else use the threaded screws and anchor them other spots that will accept the screws. Thanks for any and all suggestions on this.