I really don't understand why popular flight computer display software don't do this. SeeYou Mobile and I assume everything else, knows when I'm circling and can even provide suggestions for thermal centering. Surely when it detects I am circling it could display the current climb rate in a pellet variometer display and once I level out it would switch back to moving map.. This would sort of be the perfect combination of vintage and modern instrumentation, all in one.