Running without a Battery Switch

[bradford]

If I decide to rig my skiff without a battery switch am I commiting some kind of huge sin in the boating world? I can see the need if running two batteries, or a bunch of house loads, but my electrical is pretty simple. Gonna have a single 1000 mca starting battery mounted in the stern next to the 90 etec with a jack plate, Got a 3 switch panel for nav lights, bilge pump, and a chartplotter.