Help! New TT skipping badly....

Rigid turntable, unipivot tonearm, wooden floor, bad set up, big mess.
No way to fix it without spending money, money better spent on a better turntable. You might be able to make it better but stopping it altogether will take a MinusK platform to the tune of $5000. A cheaper platform might work but I do not know that for a fact. Go over your set up. Make sure your cartridge is matched to the arm. If you do anything get rid of that tonearm. 
Don't feel bad about it. Many of us myself included have bought equipment we wound up hating. Experience is the best teacher of all. 

I would not spend good money after bad. If it were me I'd chock it up to experience and get rid of the turntable. Look for a used Sota Sapphire. It will never do this to you even if you set it up poorly.

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. 

Clearthink, I owned two LP 12s and they are anything but stable. Let me see if I can explain this to you so you can understand it. The Linn and the AR sub chassis to which the platter and the tonearm are mounted sit ON TOP of three springs. If you put a mass on top of a spring and give it a push what happens. Now what happens if I increase the size of the mass? Eventually the spring will not recover at all and will remain bent over. The Sota, SME and early Basis turntables hang the sub chassis from the springs. Increasing the mass will lower the resonance frequency of the suspension and stretch the springs a little more but the springs will never bend over. They will always come to rest in the same position. They are laterally stable. The suspensions on the Linn and AR are not laterally stable. They are easy to upset. Sota started with three springs but found that four springs worked better as did SME and Basis. 

Arm not meant for any domicile. If it is one thing I want to get across to people is unipivot arms are hopelessly inferior without aggressive stabilization measures as used by Graham and Basis, two very expensive arms that IMHO are not worth the money. The Kuzma 4 point, Reed and Schroder arms are superior in every way and cost less. 
winoguy, look for a used Sota Sapphire. You will be able to jump up and down all you want. They will pop up on occasion from people moving up the line. The only table that is distinctly superior is the Dohmann Helix and that starts at $50,000.