hey guys i kno of a few places here and there,
first is a quarry in andrews near robina its not really crowded and it is just near a motocross track. it is illegal though and have seen a few police 4wd's in there.
second is a little track mainly for pitbikes but have seen a few bigger bikes. it is basically right on the highway near palm beach. it is pretty hard to access and because it is right next to a sewrage farm the workers there sometimes chase you but it is alot of fun there is a few jumps there.
well thats all i kno of id like to kno where abouts some other trails are
cheers