I believe the SIM takes the baserunners speed into consideration. I have experimented with the settings with teams of mine that had no chance of winning, or who had clinched. With the setting at 5, fast runners always take the extra base, but not slower runners. The problem I have with setting it at 5 is sometimes SIM takes chances that, based on the game situation, I wouldn't want to take. But broadly speaking, I agree with DT. If you have the speed, it is a waste not to exploit it.nOnce it is set, tho, that's the way it is, and the game engine may run you out of a game. The question of slower runners taking wild chances is moot. Just like basestealing, SIM takes basreunners speed into consideration, so your 30s won't take bases like your 80s.