Fin upgrade for 2007 Rio L
My board 225L 253cm 101 cm Rio came with Drake Shallow 410 fin. As I am considering upgrading/fine tuning my board, the following questions come to my mind:
Is this fin appropriate for 5.0 m2 sail and 264lb/120kg I weigh?
What would be the implications for getting a longer (or too long) or shorter (or too short) fin?
I know that I need to get a weedless fin but what other designs, shapes should I consider?