Welcome in the family. There is a tendancy to go smaller after a few months because you ordinary start big. However the next size down may overlap significantly with the board just above. Look at the recommended sail range. It shall bring you ~1.5 extra sqm down, with ~1 sqm overlap. Ideally you have just one sail to bridge two boards. Don't get me wrong: ten liters and a few cm OFO make a difference on water, but certainly one of two adjacent boards is better suited for you an your spot. You can also compensate for moderate volume or width variations with some extra tuning and adequate fins.
Last edited by Farlo; 24th August 2009 at 11:55 PM.