The decrease in cat sailing has a lot more to do with the advent of personal water craft and wake boarding than spinnakers on cats.
Maybe, but if I were to guess what is reducing our numbers from the 80's I would say the invention of video games is the nail in the coffin.
80's Kid: "mom, I'm bored, there is nothing to do"
80's Mom: "take the sunfish and go sailing"
2000 kid: "I'm bored, I think I'll go kill aliens with a super blaster, and turbo gun."
2000 mom: "I got to go to work, see you kids tonight for a few minutes before bed time."
Just one point of view.
