The J111 and M32 did have a large jib/Code 0, the Moore 24 and J24 had a large genoa.
As you saw the Viper and Etchells suffered in the distance race for not having the large sails.
If the R/C had postponed the Distance race by 30 min waiting for the wind to fully develop, we could have pursued other course options than a reach/reach distance race.