As you have noticed some suspended turntables will also skip with footfalls. The two mentioned here are the Linn and the AR. The Linn is a copy of the AR and uses the same unstable suspension design. They are both also underdamped. Sota was the first company to address this problem back in 1980 by hanging the turntable from the suspension instead of sitting the turntable on top of the suspension. The Sota design is inherently more stable. SME and Basis copied this design. All three turntables are totally resistant to foot falls. The Linn and AR suspensions will isolate the turntables from vibrational issues within the audio band but because they are unstable impulse problems like footfalls get them skipping. Yes, you can tap on them vertically without trouble and if on a very sturdy rack you can even hit them vertically with a hammer. But, just a light tap to the side of either turntable will cause skipping. The Sota will tolerate this until you hit it so hard the turntable actually moves. The MinusK platform is special because it is not just sprung vertically but also horizontally. You can cause horizontal movement and the turntable won't skip.
@winoguy17 , you could put lally columns on either side of the furnace with a beam between them bracing the floor but there are no guarantees that it will work. I think you best spend the money and time on a new table. IMHO you will also benefit from a tonearm with proper bearings.
@winoguy17 , you could put lally columns on either side of the furnace with a beam between them bracing the floor but there are no guarantees that it will work. I think you best spend the money and time on a new table. IMHO you will also benefit from a tonearm with proper bearings.