I have had my Fusion for almost 3 years. I am 73 and kayak twice weekly year round. I have had the kayak on class II rapids and flat water. It performs well in both. the skeg keeps it tracking well in flat water. My GPS tells me my moving average is 3mph. Most of the time I'm at 3.5.
When the wind is up and there are white caps you will get wet and work hard going into the wind. I have found that as long as you keep your speed up it does well in most conditions.