| try and reach a compromise. you dont HAVE to anchor directly under chin. i dont.
try getting him to achor under the jaw line so the string goes just down the side of his nose. in effect just moving his hand down his face a bit, it will be less of a change for him and still let him shoot "his way". this may not be ideal for the long term but should help keep him interested and keep him enjoying it.just change a bit at a time. i agree about over coaching too, i even get that now!
best of luck and i hope sticks with it
AL |