I currently use he ipad mini RAM roller mount on the yoke of a M20R...works perfect. This is def a step up from the previous universal mount that preceded the roller mount. I recently order the new "iPro Navigator" from pilot mall. This attaches to the RAM ball system or you can buy it as an entire assembly from scratch. It's currently back ordered. It has a clipboard that overlays the ipad mini. I'll review it when I get it in but it looks great. Additionally, I wouldn't trade the mini for a full-size ipad ever!
http://www.pilotmall.com/product/iPro-Navigator/new-products?r=PilotMallNews_05-24-2013
Brian Sparks
1009M / M20R
KDTN
Shreveport, LA