Something I do when I'm tracking my course on a nautical chart is to use a couple of those sticky "sign here" plastic arrows to move along my line of travel whenever I take a fix, or pass a bouy. I usually have already plotted a pencil line between waypoints, so I'm just keeping track of where I'm at. It allows me to just leave common tracks I follow on the chart, but, use the removable sticky arrows to track progress. I'll sometimes jot the time down on them too.

Always good to keep a dead reckoning track anyway for myself, but, I always thought it would be good "just in case" so my son or wife would have a clue where we were if I have a problem and they have to make a call on Channel 16 for the CG or a tow boat... (something, thankfully, that hasn't happened yet!)