Hi,
I'm using 'official' raspberry 7" touch screen, with some drawbacks :
The display area is 800x480 pixels and definitely, 480 is not high enough !
eg : In the set keyboard dialog (Raspberry preferences it is quite difficult to reach the 'OK' button at the bottom of the window.
Even worse, in some of OpenCPN dialogues windows it is absolutely impossible to reach the bottom of the window where is hiding that @["{# 'OK' button !
Another problem with touch screen : OpenCPN has no 'shutdown', or 'quit' button ! Of course, as the display is small you launched it in "full screen" and you
need a keyboard if you want to stop it ! Not to mention the plugin menu where the activate button is also quite hard to reach...
I think I will continue with that too small display and use VNC or RDP from a tablet to walk around these issues, unless I can put my hands on a 10" sainsmart display...