Hi, I am a Florida boater so I donít have raging rivers and I have never seen a rock in the Florida mud. No to say that I will only stay in Florida but that is my main area of boating. Flat water rivers and lakes in the winter. During the summer I usually visit other rivers and lakes in Michigan and the Grumman is a heck of a lot easier to tow than my 26 foot sailboat. I have a Grumman 19 square stern and I am looking into motors. I want to be able to travel about 10 to 15 mph with about 800 lbs of people, dog, motor, gas, and camping gear. I am looking at the Tohatsu 6 hp. I have a 9.8 on my sailboat but it has a 25 inch shaft and is way too long for the grumman. Is 10 mph possible with a 6hp motor? Does anyone there have experience with a Grumman 19 using a 6hp 4 stroke? What can I expect? I really like the Tohatsu because my 9.8 has been very dependible and was bought new at a great (low) price.