I am converting half of my shop to a man cave. The part being converted is 20' x 30'. I will be putting a pool table in it. (No it is not a gold crown or diamond. I am a poor sp ed teacher.) The floor is concrete with an epoxy coating. My question is this: Do I need to put anything under the legs or can they just sit on the concrete? I know probably a silly question, but I do appreciate any advice you can give.