Re: How much do you use your Chartplotter?
Ours goes on before the anchor is pulled and off about an hour after the anchor is set, to check for any dragging. If the wind is above 25 or 30 knots, or we are unsure of the anchor, it goes on, with the anchor drag alarm set. We have a second one in the aft cabin which also doubles to monitor the boat and the helmsman, and an anchor alarm (or proximity alarm with the networked radar under way) while sleeping.
It not only supplies a very accurate chart (at least for everywhere we've been), it supplies speed, X-track error, course made good and several other things I like to know while sailing and especially in areas where the currents are irregular. Why in the world would anyone turn such a handy piece of expensive equipment off, while underway?
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.