The hammer drill (or better yet, rotary hammer) is one of the more
indispensable tools - there's nothing that works even remotely as
well.


Eggsactly ! and you can rent one from HD (Bosch Hammer drill or rotary
hammer) for the 4 hr minimum for about 25 bucks and get the job done in less
than an hour..or "tinker" around with ancient technology and spend all day
at it.