Hey Adam - welcome to the forum
I think your post might be a bit lost in this part of the forum as its a bit of a backwater.
Anyway, I am sure someone knowledgable will be along shortly to answer your question.
In the meantime, you might want to look back through the older posts under 'Stand up paddle - General'. For example, a couple of pages back there was this thread which part answers your question....
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=51471