We have a piece of oak that has a little notch in it that's going to attach to the birch tree that's going to be a spring. And the very top, we cut another notch that's going to hold this piece of cordage. The cordage, I put a clove hitch in; you can put anything really that will get a good bite and hold. So this is going to hook to the bottom part of the birch. This is going to go up to the top part. When the fish pulls out, the whole thing should snap up in the air. So now, it's time to go swimming. So what I'm doing is adjusting my notch so that he gets a better bite in the bottom part of the trigger. Because of the curve of the tree, I have to do a little more adjusting then. I'm cutting the notch in a lower part, lower branch so that my top part of my trap trigger will hook in here. Let's see how this works out. I've got a nice notch. It's a hair trigger. Hopefully it's going to hold. I have a feeling I'm going to have to re-cut it. It's not quite getting the bite I need, so we just keep re-trimming it until we get the perfect bite. I'm slowly using up a good part of my wood, but I think we're going to get a good bite.