I don't foil (always wanted to try, but no one around here has one). But while researching insurance I found this disclosure on the ski-safe web site.
Private pleasure use only.
No use for parasailing or similar activity, including air chairs.
Boat must be17 ft. or longer. Mini jet boats go into our PWC program.
That really caught me by surprise and was just wondering if everyone knew this. You might want to check your policy to make sure air chairs are not excluded on your policy.}
Check out the Ski Safe page here