If you can get three in a row you can really make out:

"Imagine just what you can get from three single dozen's winnings from a parlay, $50 becomes $150, $150 becomes $450, and $450 becomes $1,350 all in around five minutes. That's 27 attempts just to break even. The casino is in fact a gold mine to those trained in the skills of mining it."

By using $5 & $5 for the base flat bet on two dozens and then going up to a three step $10, $20, and $40 up and pull bet to finish off any win streak on a single dozen, you can take a little each step of a three step parlay.

You bet $10 on the selected dozen and $5 on the other not sleeping dozen. Next you bet $20 on the winner and $5 on the other not sleeping dozen. And last you bet $40 & $5. So you protect all the way with a hedged bet or a winner if you guess right on the parlay. The only thing that kills this is the sleeper waking up or the singles ending in a chop cycle. For that matter if you guess which dozen is the cold dozen wrong.