How do you attach cones/feet/etc to components?

I haven't been able to find much on the subject and it seems almost as, if not just as, important as how the feet interface with the rack. I have been using a thin double-sided adhesive tape, but am thinking about blu tack for my next set. On one hand, blu tack seems like it would better transfer the vibrations to the cones because of the tighter bond, but on the other hand it is an absorptive material and that seems like it might reduce some of the "draining" properties of the cones.

Yes, yes, experimentation is key, but I'm curious what others are doing.