Don't worry about how easy the SplitFins are to kick. There is nothing wrong, you're probably already going just as fast as you did with your old fins. Although they work with a variety of kicking styles, you should adapt to a smaller range, more frequent flutter kick for maximum performance.
The smaller-range rapid flutter kick also keeps your legs within the slipstream of your body so that you punch a hole in the water that is only as big as your shoulders and your tank. Remember, less drag means more speed and less effort.
Please specify color and size in comments.
Colors: Aqua, Neon Yellow, Blue, Silver, Royal Blue
Size: Small (5 1/2); Medium (6 - 8 1/2); Large (9 - 11); XLarge (11 1/2 - 13)