I'm looking for a SOT kayak for fishing, and I am confused about rated weight capacity. I read somewhere that I should take 2/3 of the weight capacity, and use that weight for the kayak to perform at it's best. If I go over that, the kayak would be sitting too low, and it would be a wet ride. One I'm interested in is the Malibu Mini X, rated at 325 lb. capacity, and I weigh about 240. 2/3 comes to 217 lbs. Am I too heavy for this kayak? Thanks.