I have SD on an iPad 3 mounted in a RAM yoke mount in my Grumman AA5. It's probably a bit bigger than ideal, but there's enough flexibility in the RAM system to get the device precisely positioned, in portrait mode, without obstructing the instuments in any way and without getting in the way of my A5 strap-on kneeboard. Once it's all in place, it's very well positioned and allows a perfect scan over both primary intruments and Sky Demon. After a decade of fiddling with various GPS devices, power supplies, software and mounts, this is unquestionably the best and tidiest solution so far.