well i like the electric jackhammer idea best, i think that would work better than a concrete saw. pallet forks work pretty good too, a few months back a friend up the street was going to break up a 10ft long section of sidewalk. he had just gotten out his electric jackhammer when i stopped by, he told me what he was doing so i said, hmm i could use that piece of sidewalk to put infront of the doorway of my goats barn so it isnt such a big step up and to keep the mud to a minimum. so i got my tractor and my 3pt pallet forks, tilted them down with my hyd toplink and slide them under the slab which was around 5 inches thick, lifted up and the whole piece came right out and i carried it home with ease, set it down where i wanted it and was very pleased, all with virtualy no hand labor