I have tried many spinnies on my H16, single handing and 2 up. It transforms the boat. The best kite I have foubd for it is the old F18 21 sq mt. The kite has an 8 mtr luff. It works best with a 3mtr pole. (windsurf mast fits just well)Turn the boat on its side and fix the pole. Then attach the kite to the tack of the pole. Take the head of the kite up the mast and set your pulley at the appropraaite place, just tight so you can adjust it from the boat. (Make sure you have the forestay very tight first). You will rarely pitchpole. You will be as faster than most other boats downwind. If you stick the nose in DO NOT let go of the kite sheet or the main sheet. Just wait and it wil pop up. Have fun!