Seems that you are beating your head against a wall here, George.
Why not simply contact all local RC boating clubs, express what you'd like to do & then if you get their favorable replays that result in 20 or more attendees interested in conducting a regatta, apply for an event far out enough in the spring or summer to ensure participation. If that gets shot down, then submit a back-up land-based non-sailing protest event with media & show up with boats less any electronics to ensure you aren't violating any potential regs regarding "remotely controlled vehicles". I'd think sailboats without radio gear would qualify under the Props and Equipment
segment of the Special Event Guidelines.
Of course, there could be another way to skin this cat.