Closing Trade Strategy (What's Yours?)

[tolarius]

I am starting to realize now as I dive more into EAs, that your close trade strategy is just as if not the most important aspect of your EA compared to your indicators.

I am curious what folks have come up with for their strategies of closing trades.

Do you simply close any open ones of the same type and open new ones?
Do you close based on static or dynamic SL/TP levels regardless of how many trades open?

I am aiming at an EA (for right now) to work on scalping the major pairs, 5 or 15min.