Turntable placement and isolation

Hello,
I have a Clearaudio Concept turntable which was so far placed on a rack behind the two front floor standing speakers. I am currently changing the layout of my 2 channel system, removed the audio rack from that imaging-sensitive location and placed all electronics on the carpeted floor between/behind the speakers. Each component, except the turntable, is currently placed on a maple plywood (1 inch thick) which sits on the thick carpet. The floor is a wooden suspended floor. I am also trying out HRS platforms for isolating the electronics. I need some help/advise on the turntable placement on the floor. What are your thoughts on putting a turntable on a platform on the carpeted floor? Is this going to seriously degrade the sound? What could be used to isolate the turntable from the carpeted ground such that there are no footfall issues? I would really appreciate your feedback.
Thanks.