They are fun, but they are a compromise craft that's somewhere between a jet ski and a yak. Like any compromise craft, they are lacking in some areas with the intent of meeting the needs of 2 very different crafts. Slower than a jet ski, not as much storage as a yak. Try to test one out before you buy. I know 2 people who bought these to fish with but sold them quickly due to no room for gear/fish storage. Think of it as fishing from an amphicar...
-Poo