I have a F159. It's a 2005 model and some things have happened to formula since then. Anyway I've used it a lot and it's definitely one of the longest lasting Starboards I've ever had. It just won't break or crack. You won't win the world cup on the 159 but it's a speedster and it may be a better option for recreationel blasting than some of the very wide tailed formulas. It carries an 11 metre sail easily but it takes a 8.5 sail and smaller fin if you want to blast it as a huge slalom board too.
The latest designs will plane a little earlier and carry huge rigs in very hard conditions though.