1, organizer 8 z K. B( \$ Y2 [ a2, commitment + ~! q0 ~2 @% F7 G: g3, every paddler is different, some are recreational, some are serious competitors, x2 M. P& N9 d
4, cost 1 l3 F, U1 k/ [5 ~5, fitness level( \: N7 o3 ]% z! _5 K% W
6, whatever other factors