I’ve read extensively on what Walter Jeffries of Sugar Mountain Farm has to say about pigs. Everything you ever wanted to know plus a whole lot you never thought to ask is on his site. His coverage of taint is very good.
We bought 2 grown hogs last year, a one year old boar and 2 year old sow. We fed them soured corn for 30 days and took them to slaughter. Best pork we ever had!
Get some cow panels and build a pen. Tpost the crap out of it. Lure him with sour corn and feed him sour corn.
To start sour corn, 1 can of beer, 16 oz live culture yogurt, or a half gallon of raw milk. Put in a bucket with 2 large coffee cans of corn, top with water. Repeat for several more buckets. I keep 5-8 buckets going at a time. Pour most of the juice into another bucket before serving and continue the process. You can add more milk as you go. Raw milk makes good pork!
Talk to the butcher. After slaughter get a piece of the meat and cook it. If no taint, proceed. If taint, make sausage, pepperoni, salami and such. The bacon off such a large hog will be awesome!