I sail a F18ht in Europe. In former times I have other Katamarane sails Hobbies, A-Class, Taipan it am all good Katamarane. But over with "us" at Regattats to keep up in front I bought a F18ht.
Different Katamarane for different People in different sail Districts.

For me the F18ht great I sail is alone and too second.
The Speed is the same as with the F20 with us at the Lake

Greet Steve