Its been my experience that if it looks like fun people will want to try it. The problem with catsailing is the scenes of boats capsized turn people off. I have heard this since the 1960s. "I don't want to turn over!" or "I don't want to get wet!"
As far as big names in sailing most people wouldn't know who they are if they sat next to them. Unless a way is found to make demonstrate how much fun catsailing is the sport will stay relatively the same I'm afraid. I've tried for 40 years to get people to try catsailing with about .3% liking it.
The major difference between catsailing and Nascar is the circle track that people can be next to. AT Texas Motor Speedway you can feel the cars go by the stands and the sounds are unbelieveably addictive. If I were 16 years old and had a coice of sailing or going to a Nascar race theres no question which I would do. One looks exciting and one looks like work to most people.
Another question is who these sponsors might be and who is their market. How can you keep them contributing??? Again if they don't see a profit they will pull the plug pronto. For example look at pro cycling...how many sponsors stick with that sport and its worldwide and the cost of most bikes is under $7500.
I wish I had an answer
thom