Simply using the battery compartment as designed. Battery slid all the way forward in the neat little recess and then the canopy fastened down with battery retainer intact....mine flys pretty much hands off at 50% throttle. Again, I'm flying on 2200s exclusively. 10 minutes of flight time using mixed throttle is the norm.
Parkzone planes are designed for flight right out of the box. I've found they'll do just that with little tampering.
Why spoil a good thing? I always recommend to fly your plane first with factory set-up, and go from there. With PZ models, there's really not much more to it than that