On the 737 I find that all you need is a normal iPad cover, no separate holder. Get a cover with a solid (one piece) flap. Not one of those that rolls up into a triangle shape.
What I do is I put the Ipad on the yoke. Pull the chart thing towards you and have the Ipad facing you with the solid cover at the top away from you.
Great angle and even in light turbulence it stays on the yoke. Best invention ever. Now I understand why that chart clip is there.
And with us PED's are allowed. Very sensible!
