If you have 3 add-in average levels at equidistant prices in a "trading range" you can be "right" 87.5% of the time and still only breakeven after costs over the long term. If you do it against "a trend" your advantage vanishes even faster. If you are a marvelous level picker, and put your biggest size at the extreme spots then your mileage will probably be better. In any case the % return-on-risk of your account will likely be dismal.