Add a "pocket" feature
Add an option to mark the frame as a pocket hit. This will allow you to mark strikes and whether that strike hit the pocket or not. Will also allow you to track your pocket percentage, and the strike percentage on pocket shots. Will also allow you to track strike percentage on non pocket shots such as Brooklyn strikes.
Between the Scores/Pins button and the Split/Not button you could add the Pocket/Not option so we could track pocket percentage and non pocket strikes percentage.