Ok, I got an aluminum V hull with a 9.9 HP 2 stroke on it. I've been trying to figure out if it's safe to take it out on the northern Sacramento River. 1: How do you tell how fast the current actually is in the water you're thinking about puting your boat on? 2: Is there a standard safety ratio between HP and the speed of the water you're going out on or something? I mean, how do you know what will do the job and what won't cut it?? 3: anyone else in this area fish the N. Sac river south of Red Bluff? If so, what is the minimum size boat and motor you would suggest?