Re: Just for kicks and grins...
I can see the tack near F to avoid the shoals, but then once you'd gone North towards X, couldn't ou have played that leg further north and then avoided a couple of more tacks on the way back west again?
Not knowing any local currents or rounding requirements that may be a dumb question. Or were you just tacking to cover the competition?
Sailboat racing. Just like poker, a simple game with a small rulebook.