yet another question about board size

ok im 19 i weigh 145 and im 6ft tall (i know im very thin for my height) the waves here are ok and i do alot of skimboarding and im quite good at it and have been doing it for 2 years or so, and now im steping up and im curious as to what kinda of board and size would be good for my rail of a self, thank you, and im sorry for this question for im sure you get it night and day.
thanks
thanks
