B) Universally disallowed by sanctioning marathon organizations. (Note: some organizations will allow swimmers to use select items in an “assisted” or special category.)
1) Drafting
2) Fins
3) Booties
4) Headphones
5) Gloves
6) Paddles
7) Shark cages
8) Netting
9) Wetsuits
10) Face Guards
11) More than two caps
12) Physical contact (i.e., assistance in and out of water)
13) Rest on support vehicle or kayak
14) Performance enhancing drugs