Fish,, You said, "Win one day, lose the next. Gonna have to pay taxes on net gains this year! Oh well, better than having losses and not being able to deduct them."
Don't pay anything. Go to the horse betting parlor and pick up all the losing tickets and get all your friends lottery losers.
It adds up and you could be tax free. Also get you statement from the casino regarding your win versus losses. I have never paid a dime on casino winnings.