On Sep 16, 4:54*pm, Tony Verhulst wrote:
Mike the Strike wrote:
..... difficulty
touching the screen of a PDA in our *turbulent western air.

I'm wondering how a trackball would work here.

Tony

A trackball would work fine if you could locate it where your hand or
wrist is supported. The problem with a touch screen is that your arm
and hand are extended and move under the g forces on the glider. I
have no problem at all with a remote located by my left hand.

Mike