I'm just curious, why do they put both limits on a boat? My boat lists 4 persons/600 lbs. The boat only has 2 seats that can be used while underway so what's up with the 4 person thing? It would seem that the max. weight would be the important factor. What if you wanted to take 4 or 5 smaller kids out for a joy ride? Seems they would probably take up less room than 3 or 4 men. Any comments? 