I do a consistent three except from May 15 to July 10 and September 1 to November 10. During those times, it's 4-10 (some days I go before work and then do the night shift after) times a week. BUT I'm not one of those guys who goes out no matter what, if the water sucks I stay home and put cookies in the jar for when the water is good again. And I no longer do all-nighters I've learned that it's an absolute waste of time---unless I'm slamming them, then I stay 'til they quit.
-Dave