"In your expert opinions, is there a system or method you have for switching machines? Do you leave a machine after 5 cold spins, after 10 or 15 mins. of garage hands, or aftera certain amount of your bankroll is spent? "
Rather than switching machines, I will take a break and mentally review if I am still alert and playing proper strategy or perhaps I am hungry or need to get some rest.
Losing (by itself) is not a reason to change machines since most machines are a negative play to begin with.
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