I guess I think it better and cheaper to have a second motor than a tow service. In My life I have never been towed. I have towed a lot of people in but mostly people who did stupid things, ran out of fuel, ran aground and bent or lost the prop, ran the battery down with their radio. Quote]
Glad I read this thread. Never had to have been towed yet, but the "ran the battery down with their radio" statement got me thinking . . .
We often pull off into a bay and relax for hours at a time while I have the Sirius tuner, the stereo and the vhf all running in the back round. Who knows how close I'm coming to draining it flat before the alternator brings it back up when we start cruising again. I have a cheap led tester, but it's work to pull it out, open the hatch and hook it up each time.
So I just ordered two in dash battery gauges. One for the starter and the other for the deep cycle battery when I have that one on board for my days out fishing. I like to not have that 2nd battery on board if I'm not trolling, to save the extra 50 lbs.
I bought two separate gauges, I saw they have one gauge with a switch that you push to read the other battery, but my dash space is tight so I plan to mount both on wall below the back seat. If a switch sticks out someone boarding is bound to shear it off with their foot!
Sorry to go off topic, but boatist's post about "the radio draining the battery down" comment probably saved me from a future tow!
Also, I have a main battery cutoff switch, but I forgot to shut it off last week while parking in a downpour and boat sat for 5 days in the driveway as the FM powered antenna continued to drain battery down. Took about 1 1/2 hours to bring it back to full on a charger so it was down quite a bit. A gauge would have alerted me to the batteries weaken state, before I hit the water.