I seen some food at regattas that looked like dog food for sure, but most of the guys I race with have never been on a strict diet other than a see-food diet.
Pat and I are pretty much exclusive members of the 'over 200lbs' Hobie 14 racers. Plus you add in the boats that are at least 30 years old and we wonder why we don't have a lot of 1st place 14 trophys at home.