I love how the bow hold buddies work to form a good bow hold. The Hold Fish holds the pinky in place well, and the frog accessory is successful in repelling a collapsed thumb.
I do have two complaints about the Bow Hold Buddies: 1. The head of the frog creates a large space between the index and middle fingers, too much in my opinion, and 2. The bow cannot be placed in a case holder without taking the frog accessory off. Other than those two things, though, this is a great teaching tool!