Alerts script that has triggers on multiple moving average crossovers so that profit is maximised, it also has an optional control moving average, enabled by default, that when active will stop trading when the price (first ma) is below the control moving average.
@Biffy, this button is in the pinescript editor on the top right "convert to v4" its always there if you write //@version=3 on top. i often use it to convert v2 into v4. you just have to change v2 to v3 ;)