At first glance, one of the hardest things about designing a good hull for the F16 is the massive difference in displacement that the hulls see in different sailing modes.

i.e. one up with both hulls in the water you need to optimise for 90kg, 105kg boat + 75kg crew =180kg/2= 90kg

Two up flying a hull you need to optimise for 300kg, 110kg boat + 190kg crew = 300kg

The optimised hulls for these two conditions are very different.

However a good compromise hull works surprisingly well when sailed at either 90kg or 300kg.

Here are two graphs that show the drag of three hulls when sailed at 90 kg and 300 kg.

Hull1 is optimised for 90kg, Hull3 for 300kg and Hull2 is my compromise hull.
300kg

90kg


The same graphs but zoomed in on what I consider to be the most important speed range 8-12 knots.

300kg

90kg


As you can see the compromise hull performs well across the displacement range required by the F16 class. I have more data I just need somewhere to put it.

Gareth