Turntable Isolation

What's your budget?  The Minus K (or similar) is probably the best isolation device to prevent footfalls from affecting play.  The cheaper options are hit and miss as a lot depends on the your rack, listening area etc.  More info at minusk.com

Suspended floors are a different thing from a cement floor. Turntables with outstanding isolation are still subject to problems from footfalls on a suspended floor. For a nearly hundred years the answer is wall mounted shelves. They are made to get the turntable off the trampoline (floor)

Budget < 1000

As a cheap method, and one that served other quite well, as means to avoid the impact on the Vinyl Source, where footfall is a Problem.

A Wall shelf can offer a lot, without too much hassle to mount it and still able to utilise additional footers to further tidy things up. 

I cant do a wall shelf.