Another thought about the rythm of flying a hull with the spinnaker and keeping it up:

As well as heading up before the hull starts to drop back down again, if there is a really big puff then you can momentarily dump a foot of traveller to spill the main while you are steering down, then get the traveller right back in again. This avoids having to steer down as much which then can lead to the hull splashing down or excessive steering movement. I wouldn't recommend doing this continuously - just in the combination of big puffs and particular wave positions where it will smooth the course.

Another thing to play with is the how far down to run the leeward dagger board. On smooth water with consistent wind we think you can run it a little deeper to pop a hull just a little earlier. In waves or puffy conditions this seems to make the boat trip and lift a hull rather than squirt forward in the puffs.

Running the windward board deep just always seems to make the boat trippy and harder to sail smoothly.

In really big wind flying a hull doesn't seem to pay (at least on a Tiger). You get over two or three waves at warp speed before stuffing hard into the third or fourth one and giving the crew on the wire a hard time. We now stay on the tramp and keep it deeper with both hulls in the water most of the time, steering from the rudder cross bar for more speed/precision than using the hot stick.

Chris.