Rick,

I think NACRA took a look at what F-18 has done to allow closer racing between crews of different weight, allowing a larger spinnaker and jib for the heavier teams. The first of the larger spinnakers for the F17 is expected to be sailed competitively this weekend and feedback to the sailmaker will be provided. I have not heard of any other classes that allow the different size spinnakers for the big boys. BTW, there is a jib kit for the NACRA, but was not designed for or allowed in class racing. It was provided for people like you who want to take their wife/kids for pleasure sailing some of the time.