1, organizer 7 ^, j) ?7 r+ Z: X2, commitment" F6 h5 S9 n# m8 v+ K/ w4 j0 m
3, every paddler is different, some are recreational, some are serious competitors $ t0 \9 P, v( d8 z5 M4, cost& ^; `( M) F% _6 @) f5 g1 t q3 @
5, fitness level( n. p. j9 c. q' `$ X% E
6, whatever other factors