The course is owned by a doctor from Springfield, his first name is John but the last name escapes me. His house is on the bluff overlooking the island, mostly large glass windows on the lake side and you can see it from the course and vice versa. He has a 2000 or '01 Nautique. Nice guy too, just wants people to respect the course and replace buoys if knocked off.
FWIW the course is an EZ-Slalom HeavyDuty permanent course installed by myself and the owner last year to replace the trashed course that was there previously.
Cheers, Ed @ EZ-Slalom www.ez-slalom.com