Here is a nifty little tool from saltwater flies.com. for tying nail knots in a snap this is the tool to have! this is the saltwater version for 8.95 u.s dollars. They also have the universal tier for 7.95 u.s dollars. Knots...every fisherman needs to know the basics and if your like me and really suck at knots then this is for you. The saltwater version ties knots in the heavy leader class up to 100lb test. I fish with 80lb and will be picking up one of these bad boys...enjoy!