I think the game would benefit from having better control for power on mobile devices. The putter pall helps but, especially in coin rooms with a shot clock, it's difficult to get the power you really want. Here is an idea. Keep the up/down for coarse control of power and add a fine tuning with left/right movement of your finger on the screen. So for example, if you want 52%, you quickly go up to around 50% then, without lifting your finger from the screen, you slide your finger to the right to slowly add power or to the left to slowly decrease power. I think this would be really easy to add and would help people like me who play on small screens.