Fellas,
Do either of you remeber all the North Shore stuff in those pines before? The council has pulled it down before, so if you go building there, non riders will see it in 2 seconds and the council will know exactly where to go to pull it down.
With trail issues so hot in this area, if you muck around building stuff, do it with dirt. Actually using wood crosses a line and will attract the council in 2 seconds flat.