 Be the first to the finish with your new Nitro Fishing Boat powered by Mercury Outboards from Walker Marine. Hey, this is Skip at Walker Marine. Our Nitro Fishing Boats are rigged up and ready for a day of fishing and catching. Nitro Performance fiberglass boats are designed to be pure fishing machines powered by Mercury Outboards. Every Nitro boat is laid out to do one thing very well. Catch fish.