For trackball golf make sure there is nothing in the way of a good swing like spinners buttons or joysticks. Also make sure the trackball is as far away from the monitor bezel as possible. Nothing worse than slamming your hand into the cabinet. Mame Golden Tee II uses three buttons and the trackball only. (start, turn left, turn right) PC version need L and R mouse buttons to do most of the stuff but entering names needs a keyboard and enter. You're probably safe with 5 buttons. You can use Emulaxian to launch GTG PC or just launch from the desktop. GTG PC is much better looking than the mame versions and is worth it IMO. Need a keyboard to enter name.