a columniform wood replace the thumbrings

i use rope bind the columniform wood and bowstirngs, so if you draw the columniform wood also draw the bowstirngs, a few touch of your finger between than the thumbrings(hehe the rope hold the bow strings and the columniform wood), and a few right hand distortion when release time

the columniform wood is small, take your index finger as L shape and the columniform wood inside your thumb and index finger, the columniform wood is perpendicularly hold by fingers , also you can hold it aclinic as a thumbrings

i has get more best shoot result when i use it , if you do it plese let me know you are also get more best shoot

thanks