Yes, most of the time towing capacity is listed as an empty vehicle with one 150lb driver, so if you add boat, motor, trailer, fishing equipment and boating equipment, add one or two guys, he will be well beyond the limit. He listed the boat and motor at 765lbs + trailer(300 lbs), he's over. So, like GCG said, stopping is far more important than the capability of getting going. He might drive like a normal person, but it can be the other idiot on the road than can force evasive action and cause a crash. So when that happens, who will pay for his repairs, the people here that advocate he's good to go, I really doubt it, they'll be the first to slink away and hide.