Mayhem put in strong performances in races one and two to claw back several places after less than perfect starts, and eventually got away clean in race three, but it wasn't quite enough to beat the unstoppable Viento.
In the Tornado Nationals, the fleet was very evenly matched, but it was Stony Broke that came out on top after the first day of racing.
C4 put in an impressive performance, placing second in the first two races, and first in the final race of the day, for a place of second overall after day one.
The sports boats division is one of the biggest in this year's regatta, with a dozen boats competing.
While the racing in yesterday's light winds was far from fast, the sports boats did give the on-water umpires their only opportunity to issue a penalty for the day, which went to local boat Orange Peeler for a port-starboard infringement at the start of a race.
The forecast remains light for the rest of the week, but Regatta chairman John Grant was philosophical about a relatively slow day on the water.
"Everyone made it back to shore safely, and everyone's got a smile on their face - how good can it get?"
Ray Haslar echoed his sentiments.
"Today was difficult to get started, and it was a pretty quiet day, but there were no 'grizzles', and everybody got three races in, so it was a good day in that respect."
Racing continues today.
