Back to the M32, that boat is Uni rigged on the upwind and sloop on the downwind. In that way you get the high efficiency and low drag of a single wing on the upwind (like all speed machines seems to choose) and then switch to the high lift mode with the sloop configuration on the downwind.

The big problem for all beachcats during a distance race compared to the bigger multihulls are the speed gaps you have where you can't use the spi and you are not sailing high enough for double trapeze reaching. The bigger multihulls have screachers and other stuff that the smaller boat lacks. Here the sloop has an small advantage compared to the uni since it has two high lift modes to use, spi or jib which covers the gap a bit better than the uni. On the A-class with spi this gap is from 30-40 deg from downwind to about 70 deg from downwind where I can start to trapeze with main only.

/hakan