Do you go to Speedway? 1,000 spectators over the 3 leagues? Scunny only gets around 250/350 and Edinburgh about 450/550, Worky around 400/500, Berwick around 500/600 and they are in the championship, Cradley will get more than that and Birmingham, Lakeside and Eastbourne will be close but the likes of Buxton will be around 100
I would say average attendance across the 3 leagues of about 700