Stop fixating on the "1800" people solution, that's just one idea. Wave or time trial starts would not be very expensive to implement (at all), and would spread out the pack of potential drafters a great deal. Here is IMFL today: A flat course, ~2500 competitors, a mass start, ineffective enforcement, incentives to cheat (Kona slots, AG wins, PB's), and a history/mindset that drafting is acceptable. Of all of these factors, the easiest one to change is the mass start (Person with the brain of pull buoy could figure that out...). Then, work on the other factors (threaten to pull Kona slots, incorporate video enforcement, reduce the number of participants, etc.). Will anything be done? Time will tell....