While coding my own experts, I realized that the process for opening/closing orders, etc. is pretty much the same every time, and I kept reusing the same code every time I wanted to try a new strategy.
Instead of having to write new code each time to open and close orders, I decided to write an include file with functions that will do it automatically, and keep track of the state of opened/closed orders, trailing stops, adding to profitable positions and hedging.
The end result is that it takes minutes to code an EA to try out a new strategy using different indicators. That way, the programmer can concentrate on coding buy/sell logic instead of dealing with routine actions.
Try it out, modify it and let me know if you like it or have any suggestions.