If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Paddle your way to the finish line before time runs out. Pick up fruit and perform tricks for extra points and turbo speed. If you flip the kayak, you'll lose a life.
Up Arrow Key Paddle.
Left / Right Arrow Keys - Rotate.
Spacebar - Jump.
1-4 - Tricks.