A number of us who raced at Molokai this year wore a specially designed ocean paddling sun shirt with a gel/food pouch and hydration fastener on the front. Seems are also on the outside so no rubbing. They come in short and long sleeve.
Short sleeve is $50 and long sleeve is $60 plus GST.
I suggest you contact Surf Sports Supplies (
www.sursportsoz.com.au)
Regards
Brad