I need to tear out a 20 X 40 Gunite concrete pool with approx. 6 feet of concrete deck surrounding it. My current thinking is to rent a excavator, maybe in the 6 ton class or larger if necessary, dig a 12' to 14' hole, bust up the concrete, shove it in the hole, burying the whole thing, and regrade the area. First, I would like to know what size excavator is capable of clawing apart the walls to cave them in. I would prefer not to have to use a breaker although I know there is steel in the walls. I have a cut off saw for the rebar, but again, will an excavator with thumb pick it apart efficiently? Any additional advice or considerations would be appreciated. This is family owned property so there is no rush to get it out profitably. Oh, one more thing. One of the pictures shows a wooded area that has been cleared. I would like to pick up (or slide) one of the 6 X 8 slabs that makes up the concrete surround onto a leveled area within the clearance. Sort of a nature observation area. About 50' from the pool tear out. Will a thumb on a 6 ton handle a slab this size? The crete is 3.5 inches thick.