It depends. If you can backcount two tables you're going to be in the game all the time. If you can only backcount one, you'll want Schlesinger's ODP data to know the best time to walk away from a shoe and start backcounting a new one. Just parking at an 8D table and waiting to come in is not the way to do it, which is why I think a lot of rookies get turned off by it.
If you have an exposure problem in a store, you can limit your exposure a great deal simply by setting a very high standard to get into a game. If you are using High-Low, entering at +2 doesn't cost you much win rate compared to entering at +1, but it keeps you
out of the game, which is a good thing. Playing between +1 and +2 you are exposing yourself for just a few dollars an hour, and it takes a lot more than that to get me to expose myself.