Police have come down hard on a hotspot for illegal activities involving motorcycles called "wheelie school”, in Kota Masai here.br br Johor police chief Comm Datuk Ayob Khan Mydin Pitchay said that on Monday (March 15), adding that the Ops Khas-Ekzos Bising was part of police’s efforts to address complaints that the motorcyclists are a public nuisance due to their noisy exhausts.