Sometimes I use the second stick set to change views and map my landing functions. For example on my standard hat I use views for up front, left front, left, left rear, etc. On the second stick set I map them so that I look up at 45 degrees all the way around, except the front one which looks straight up (since the first set has up front). And then I map landing gear, brakes, and some other random functions in there. My primary setup has the guns, flaps, etc. Good luck figuring out what works best!
Jason