I stopped by the Hacienda on the Sunday morning after Thanksgiving on my way into Vegas and took a look at their SD game. There were four players besides the dealer and he shuffled up after EVERY hand. (Don't know if this is the case if there's only one player, but since the SD game was the only one open at the time, playing by oneself most likely wouldn't occur often.) Personally I tend to stay away from games that have 0% penetration