It is probably best to get the woodland camoflague for this one.

Go in the big building with the big blue room at the bottom with lots of washing machines.

Go upstairs, climb the ladder to get to the roof and at the top of the ladder turn right.

From there if you walk to the edge you will see a kind of tanned tree.

Run and jump onto that and camp.

There hardly anyone will find you (maybe only if they look on the kill cam).