my wood floors are springy, isolation from that movement is beyond difficult, sadly made me part with my beloved Thorens TD124 which has a bearing very susceptible to vertical movement.
Both the JVC Plinth and Luxman Plinths have special technology, but neither can deal with my floors.
Each shelf of the rack is individually isolated via compressed rubber, the stands on top supporting the glass shelf have compressed rubber spacers top and bottom, and finally, a set of rubber/cork blocks are the high tech solution that solved it here.