Built one myself and my wife and I built a 45' pen. We leave it open when we are not there with a feeder in the middle and then set the trip wire when we are there. Caught 4 hogs last weekend. Can't wait to set it again. Much more effective than the box traps and you catch more at once. Just make sure you put your t-posts close enough that they can't knock down your panels of your pen. We put them about 2 1/2' a part.

Not a bad product. works well, even after gate has been triggered. The price is a little much though. I have made several myself, even w/ rising steel prices (just made two today) you can make one for around sixty bucks.