The snell knot is used for attaching fishing line to fishing hooks. Due to the way it wraps around the shank of the hook, it can’t be used to attach line to lures. This knot was originally created way back in the day when fishing hooks didn’t have an eye on them. The snell knot is best used when the hook eye slopes out so that the line can stay as straight as possible.
Since the line is wrapped around the shank of the hook, fish with strong teeth could cut through the line as they bite down on the hook. It’s often best to use a different knot or a hook with a long shank like an aberdeen hook.
Note: Everyone seems to have their own take on the snell knot. So if you have a different take on this knot, share it below.