think what is essential on most trips other than just across the harbour, is to note your position [however derived] on the chart AND in a notebook, every hour at least for coastal sailing. the notebook we keep gives coordinates and heading and approx. speed normally from GPS, sometimes if we are feeling enthusiastic from DR or bearings. Rather sensible on coastal sailing to keep unrusted those older habits of checking position [doubling the angle on the bow etc etc.] since despite backup GPS it is frankly tempting fate to rely exclusively on these. We also cover our charts with thin foldable plastic that you buy in rolls [can't remember the name but check which is suitable as some are NOT] so can use OHP marker pens and later erase. can use in cockpit if needed/ single handed. this way, next person on watch can see at a glance what's being going on and plan/ change course accordingly. I know one should keep a 'proper log'- we have a general column for sea state and incidents but we are generally too lazy to put in much except the really out of the ordinary.