I have raced in 2 Nationals where there were plenty of reefed boats. 1980? Ocean City and 81 South Padre Is. South Padre there were only 11 boats full sail in one race out of 48. I was full sail and wished I had reefed. (ended up 11 in that race)

Photos from Angola Circa 1981 in about 25+ w/6-8 footers
Rick Quatrone & Anne Anderson on board, you have to look close at the pics to see who was on board when. Cause they were the only ones I could talk into going out for a casual day sail.