What determines the potential speed of a kayak?
The dimensions and weight determine the speed of a kayak, of coarse the person paddling will ultimately make the difference. If you take two paddlers of equal ability and strength, the design,weight of the boat and water conditions may determine who would win a race. Long, narrow, light weight boats are great for touring. They tend to have less resistance to the wind and water. Similarly, you have the same effect with paddles. Resistance becomes a crucial factor in performance.
