If you are troubled by your bootlaces coming undone (usually at a very inopportune time) try this. It is a tip I learned from a guide in Maine

Do NOT tie a double bow--we do not have enough time or energy left at the end of the day to try to get that double knot undone nor enough fingernails and usually we do not have a fork around the back of the car to help.

Instead simply go around the loop that you have created in the lace TWICE and tie it down. Lasts all day without coming undone and even when wet will come undone just by pulling on the free end of the lace.

I promise it works--something this simple has to!!