Take a look at the HydroStar by Seattle Sports (google it, many sites sell it). I am an avid Kayaker and own both the 24/7 and the Hydrostar. Regardless of the claims, I am skeptical about the 24/7 being waterproof. It is a great light, no question, however due to the nature of its design (turning the "bezel" for operation) it would seem that water would be a no no (but I usually have it with me anyway
).
The HydroStar is nice as it has several modes of brightness, a strobe setting, green/red navlight function and it sticks to the deck of your kayak with a suction cup. Inside the suction cup base is a magnet that holds the light secure but allows for easy removal for use as a tent light, small area light etc. I have dunked mine in the drink multiple times without any trouble.
By the way, I also own a whole bunch of Glo-toobs and they rock:rock: . You can use them for all sorts of tasks (marker light, reading light, small tent lantern, dive light, hang them on the kids or the dog at night to keep track of them, etc.),they are totally waterproof, bright and very small and packable.
Hope this helps!