Sounds to me like you know already what to do. It's a really simple setup where you just utilize both to get the specifik bank angle and turn radius that you need from the plane at the time. Like when you're really low with a sailplane you'd want to get a really tight turn so you can get into the bottom of the thermal where it is tight. So in that case most of the time you would be cross controlling so you can get a tight turn but also keep the bank angle at a minimum to get the most of the minimal lift. Experiment with it, but it sounds like you already got it all figured out.