When deciding between twin- or triple-pontoon design, the choice comes down to two key factors:

The size of the boat: As the boat gets longer and wider the benefits of the triple-pontoon design become more important because the boat simply weighs more and you’ll want a larger engine to get satisfying performance.

Your intended use: If your vision of pontooning is a slow evening cruise on a calm lake there’s nothing wrong at all with a twin-tube model. If you’d like to see a top speed over 40 MPH, or you’d like to have enough power to tow skiers and boarders, a triple-pontoon design is probably a better choice. If you boat on bigger water or want to be able to head out when the wind kicks up choppy conditions, the triple-tube model will also be an advantage.

https://youtu.be/ZAlutpH23Og