Originally Posted by sailingdog
One major problem with doing it the way you're suggesting is the plain piece of paper doesn't show you the rocks, shoals and other navigation hazards. So, while you may have some idea of how far you've run and such, it doesn't really help in terms of good navigation and avoiding the hazards without having to copy it over to the chart.
So true. I have an advantage in local waters however of putting a gel coat barcode on every underwater obstruction.