The 4.4 requires a 400 mast, what is the problem with x6 masts and what masts do you like for wave sails, I,m a pretty average sailer on the wave board , still coming to terms with the volume. Most of my sailing is in Port Philip bay so maybe I should take cjw,s advice and save some money and go x3 30% carbon , at my standard of sailing I might not even notice a difference