A further thought on a stable platform on carpet might be to drive three
nails thru the carpet into the slab or floor.  Done carefully the nails
would leave relatively small holes that would be easy to cover by
re-brushing the carpet after their removal at some further date.  Top
the nails with ball bearings that are glued on (or previously brazed
on).  Then make a platform from a hardened material with the kinematic
depressions as I previously described, except do it on both sides.
Place the platform on the nail tops, then your seimo on the platform.
Everything would be locked together with a kinematic mount.

Charles R. Patton


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