This is a great event and it grows each year. There are some great driving roads and the location is beautiful.
Track rental costs big $$$$$$($10k to $17k per day) and then you have to get insurance, even more $$$$. The track schedule is usually packed at the best times of the year so you end up stuck with a winter event or in the dead heat of the summer.
I have tried to incorporate Sharkfest into a driving school or Club Race but they have no interest in sharing the track time. The best most organizers are able to do is to get low speed parade laps during lunch at a club race. Fun, but not worth the time.
Scott Surdy, the event organizer, work really hard to keep this event free to the participants. Free. I don't know how he does that these days.