I've been hunting them for years. The notion of driving them into a circle is naive. Have you ever tried to stop a #150 pound hog on the run and he runs into your net or pallet. He'll move you and fast, now multiply that by say 20 to 40. Your going down. Even a heart shot and I have plenty, takes 10-12 secs. And if your on the ground and one is pissed your nothing but cheese and guess who the cheese grater is?? I hunted Pa in Mar one year, and wasn't at all ready for the way these hogs had burrowed in the ground with only their top 1/4 exposed. If they were there long enough the snow camouflaged them. We came up a draw and onto a saddle in the hills near Tioga and the ground seem to come to life. Everywhere they were springing up. Quite different than Ca. near Montery. Chester in Eastern Texas, is even more different than that, in that they burrow up against and under downed trees and limbs. When one busts out the others follow suite. Maybe two in there or 40. And they are all moving fast and every direction. All my hogs have been taken with recurve or longbow. Two bladed broadhead, shot low and angling forward. Theres a couple of other web sites that will give you a lot more information on taken hogs with bow or gun even trapping. I don't know if this site will let another site be mentioned, so PM me and I'll give the web site out for that. On another note most of the bows on here that are featured 45 lbs and above used within 15 yds will do the job as long as the hit is where its supposed to be and the broadhead is sharp. I know some can hit at further distances and get the same results. Personally, I like the adrenalin of getting as close as possible and making the best shot possible.