Its pretty simple, in order to run sprints and midgets, you have to pay out alot more money. In exchange you would have to charge more admission. That is why you you don't see tracks running sprints and late models weekly. You have to run a feature division with good payout, and down from there. I'd love to run sprints, mods, Lates, and midgets weekly, but we'd have to charge too much admission to cover the purse. Hope this helps you understand. There is alot more to it than that, but i won't get into details.