I don't know about that... we sailed the 5.8 in a regatta with a fleet of H16's. They started 5 mins before us so we had to sail though them to get to the first mark. The H16 has a lot of sail area for a 16 footer so it creates a huge wind shadow. Sailing underneath them is not that easy, especially when there is three or four in a row.

Sailing below a H16 is like arguing with an idiot... They just bring you down to their level and beat you with experience!