You put the Beyblade in the launcher, hold it steady over the stadium and pull the chord once we get to "shoot" in the countdown "3, 2, 1, go shoot".

If one Beyblade either leaves the stadium or stops spinning, that is each one point. If the Beyblade bursts into its parts, that's two points. First one to get two points wins.

[ The explanation if very very rough, but Boa's given it a lot of times already and he just wants to get to the actual matches. In the end, making Chuuta good at it isn't top of his priorities, so why not make him figure out the reality for himself? ]