IF you paid ZERO commissions, what is the best strategy?

Ok, if you basically only paid SEC fee and zero commissions, what do you feel would be your best day trading strategy? I am curious as to what people think. Scalping? High frequency?
 
Quote from tier1:

Ok, if you basically only paid SEC fee and zero commissions, what do you feel would be your best day trading strategy? I am curious as to what people think. Scalping? High frequency?
Frontrunning your customer accounts (for stockbrokers).
 
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