That, plus the steaming that such play causes, ain't a good thing.
The second key, and the thing that does well for me when I do it well, is knowing when to get out of a hand. Just because someone plays like a fool most of the time doesn't mean they didn't hit their hand. I was holding J7 suited and the flop came AA7 rainbow. Betting came to me, and I called. The turn is another 7, two other players are in, so I raise. The river's a 3, and I and another decent player bet each other to the max. Of course, he shows A2. I knew he had the Aces over Sevens boat, but couldn't bring myself to fold my Sevens over Aces. Sigh.
My 15% bonus showed up today, though. Yay, $4.50.