I am curious -- do a lot of the high performance boards share the same rocker? I learned that the cruisers share the same perfect Harbour rocker and vary more based on volume and tail shape.

Also, I would really appreciate some more feedback on the single fin vs 2+1 subject. I have a friend with a high performance EPS longboard (not a Harbour) and he always notes that the single gives it much better drive but the turns aren't as sharp and it's a lot harder to get the board vert. Any thoughts?