Ok in QLD it seems that you cannot clamp, but reading the act it does seem to indicate that you can TOW if you have a correctly worded bylaw.
6) However, subsection (5) does not limit a right a person may have to remove, or cause to be removed, from land a vehicle parked or stopped on the land.
But then it goes on to say
(7) Subsection (6) does not apply to a person who has detained a vehicle in contravention of subsection (1)(c).
Section (1)(c) and this says you cannot clamp a vehicle, so now I’m not sure whether you can or cannot tow in QLD