Grizdog - I have a 25' pontoon that has a 24 volt electric motor mounted on the front. The batteries for the electric motor are two 12 volt batteries located in the pop-up changing room. I rigged a DC outlet at the fishing station in the back of the boat wired into the trolling motor batteries. I plug a 150 watt power inverter into the DC outlet and this converts the power to AC. I then plug in an extension cord which allows me to plug in two standard clamp on lights. I run the new 15 watt low wattage incandescent lights in the clamp on lights. They give out the equivalent of a 60 to 100 watt light. In the summer when the bugs are bad I will use the amber colored bug lights which work good to keep the bugs down.
I clamp the lights on to the Bimini top, one in the front and one aft. The clamp on lights are nice because I can easily change their location if needed. The clamps hold good on the 1 1/4 inch aluminum bimini top rail. This gets the lights up in the air so that I have good lights all around the pontoon and any bugs attracted are up and away from your face.
I don't run the lights all the time but they work great for anchoring, repositioning the boat, when lines are tangled or whenever handling a fish. They turn off and on with the tap of the switch on the power inverter.
They don't seem to hurt the fishing and they come in handy on those dark, moonless nights.