Thinking about picking up a 12' or 14' jon boat to fish the Tualatin due to easy access. Both sizes are the same width I believe (36"). I'd prefer to not have to mess with a gas motor....so want to just put an electric motor on it. Currently thinking a 55lb thrust motor with dual batteries. Think that would be enough, even factoring in the very light current in the Tualatin in the summer months? What about getting up that one short, swift section by the pedestrian bridge just down from Cook?