Ken... when I was a kid, my Dad and I used to use an aircraft landing light mounted on a handle for navigating on the river and fishing at night. We connected it to a car battery in the bottom of the boat.

The beam pattern was great... sort of flat and wide beam. And man was it BRIGHT!

It made fishing easy too. We'd just shine it down into the water and scoop up the fish as they came to the surface clutching their little bleeding retinas! (That's just a joke guys... don't report me to the game warden!)