I finally figured it out.....free-range.
Virtually no commercial feeds necessary, virtually no labor costs while they're fattening, and outside of the initial investment in electric fencing (and some routine maintenance/servicing), the hogs require very little attention from my crew.
Apparently I'm the only game in town this year as it relates to hog sales. I'm not surprised as the cost of commercial feed has soared and most of the local producers have given up.
With the rainfall we had this year, my 40 acre "cochinera" produced lots of green matter and some really impressive hogs. If the rains fall next year like they did this year, I'm going to quadruple the number of animals in the pen. Heck, this year, after we've cleared out all the hogs, there's so much plant matter left behind that I'm going to park about 100 young bulls in there to clean the place up.
Traditionally, the holiday season down here is a time when lots of hogs are consumed by the locals. Works out pretty well for me because I can wait until the rains start falling in mid to late May, begin releasing hogs in June, and by late October and early November they're ready for market.