Mostly, what being on the low end of things will mean is the performance will be 'cork-like'. That is, you will only barely be engaging whatever edges or 'chines' the boat has. The boat will act like a bobber, floating you quite high. For flatwater (lakes or wide rivers), more of the boat will be up in the wind (when there is wind) and you will spend more energy keeping it headed where you want to go. For whitewater, it will be harder to take advantage of the edges to charge into or out of eddies (or any other aggressive maneuvers). It will (likely) be very 'forgiving', but that means it will not 'push you' to become better. A strong paddler may learn to DRIVE it, but a less aggressive ('lazy') paddler will not have to.