ive used it on a few bows. it does make getting the string to slide up and go in place easy.also if you have a somewhat twisted bow it can help by pulling on it from one side.on a real powerful bow of ash anyhow, i noticed once it started to make a split. i think because all the force is distributed to that one point. anyways i ended up wrapping the limb right under the nock and that pretty much took care of it. but then it made the easy slide it up into the nock not so easy to do.Tony