I have been using the Phantom 320 for about a season now with a Tushingham Lightning 7.8m2 sail. It certainly delivers the planing that I want in the 5-15 mph that is typical south of England weather
(I weigh 62Kg suited up).
Just one thing; since I don't race, would to be viable for Starboard to offer a smaller centre board for ease of maintaining it in the fully retracted position? I have noticed that myself and other inadvertantly step on the backside edge which might not help with early planing??