Now thats the ticket! A local Corian installer built a couple of these for me out of scraps he had left from many kitchen projects along with some smaller fully enclosed boxes I could fill with sand and uses as chassis dampeners for on top of gear. They worked brilliantly completely slaying all previously used footers, cones, etc.
The gear resting directly on its own feet on the "floating" sandbox platform was the way to go until I discovered BDR cones, pucks, etc. The BDR products combined with my sandboxes is sonic bliss. I have a cobination of Corian and BDR under everything these days. All the front-end gear sits in Target T2 racks where the Corian sandboxes replaced the nasty Target shelves.