I hear it all the time too, how much of a pest these are all, but if you actually want to kill em, better bring your wallet....
I've gone in the spring twice now, both times paid $300 a day plus plane tickets, and tips. Now that wasn't a cheap hunt, nice accomondations and all, but zero hogs... only saw 5 or so on the whole hunt, 3 of those were between 1am and 4am and the other 2 were a blur running across the sendero we were driving along.
This year we're bringing a full set of night vision optics, scopes and binos, still uncertain of where to go however. If anyone has a lead i'd be very interested.