Re: Which flashlight do you carry on your boat?
I have a small hand held crank type (read - no battery required) that also has a radio and weather band built in for backup, but my main light is a headlamp. LED, red light, white light. I stumbled onto these a few years ago backpacking, and they are by far the most useful lights I have ever used. Both hands are free, and it is always pointing at what ever you are looking at. Great battery life also. Got mine at Costco for about $20 and I love it. 1 in the house, 1 in each car, and 1 in the boat... now, if they would just make them waterproof I'd be set.
Erik