In my local arcade, they had a Track & Field with three buttons per player. Later on, the op swapped out control panels for the trackball version. I believe I've seen a flyer or something somewhere advertising that control panel as a third-party add-on.
There were several techniques people used to hit the buttons faster. I used two fingers on each Run button. I saw the pencil trick and the comb trick being used. Instead of a coin, though, I saw people using those nylon Velcro wallets to slide back & forth across the buttons. The operator (he actually *played* his games!) would use his right hand - thumb & middle finger - for the Run buttons and the left hand for Jump. He'd always play the right side because he had to stand sideways across the game.

I think using microswitch buttons instead of leaf buttons will slow you down. I can't make the dude run quite as fast as I used to be able to back in the day. Of course, I *am* twenty years older...
