I would never put an opti-bomb on anything. Yamaha four strokes are the way to go. If you want me to I can find out when my grandfather bought his Yamaha he had. It's still running. It was the first Yamaha four stroke I ever saw and he retired on that motor 3 years ago. He was a fishing guide in the keys and fished 250 days a year. I would say he ran that motor for 10 years or better.
