Derek, they won't do anything to stiffen a trap frame but they will hold any coyote. They are rated at 600 to 700lbs breaking strength, same as the 3/16 " quick links that many use to attach their traps to cable anchors. Just be sure to get the right size. There are two sizes . One is for 3/4" wide trap frames like on the #2 and # 1 3/4 traps. The other is for 1" frames for larger traps.