We do, of course, take the compass and deviation card from our erstwhile companions, the mariners.
They have, for the past century and a bit, had a method for doing away with that pesky bit of cardboard. Where navigational accuracy is paramount they fit a patented Kelvin Binnacle and compass. (
http://cgi.ebay.co.uk/GIANT-1-5-ft-K...QQcmdZViewItem) Such an item would take pride of place in the light aircraft of any discerning gentleman (or lady).