Great job, dad! They will be hooked for life and they (& you) will have some life long memories of the times you fished together. I fish mostly with my grandson nowadays, and he started fishing with me at age 5. He is now 15, and he tells everyone that I am his best fishing partner. He made some silly looking lures when he was younger that actually caught fish, LOL and today, he makes flies and jigs and sells them to keep him off the streets and off of the video games, and they look and work awesome. We both have some very great memories of our many fishing trips together, and you and your sons will too. Encourage your son to keep making his harnesses and some day, he just may surprise you with his abilities on making lures. 👍