Robert M. Gary wrote:
I thought about using my Dell X50v in this way ( I already have a GPS
for it). However, I decided that there was no way I would ever be able
to use the touch screen in real IFR because its just too hard when
you're bouncing around. I bought a 296 instead. Has anyone been able to
master using a touch screen PDA in turb?

Depends on how well the user-interface is designed.

PocketFMS mostly uses the physical buttons to navigate through
the 'pages' of info, but if you need to do data-entry (eg to
calculate the actual wind) then a large onscreen
context-dependant keypad appears.
It works ok for me in bouncy conditions and I haven't had
to use the stylus in-flight yet.