I learned them. I love them. I built a nice jig with nickel silver posts to tie them. My bow has one. My wifes bow has one. And i tied one last night for my new silencer when it arrives. I originally put them on below the nock without removing my string and it worked well. Then I bought some new arrows and the nocks on them arrows did not do well to an angled string at full draw. So I removed my string from my bow and slid the catfish loop on so it has a side above and below the nock like a regular D Loop. I love em! No fear of a D Loop coming undone. Solid and trustworthy to me! Anyone else use the Catfish Loop?