I FOUND ANOTHER SECRET. Its a "easter egg/scavenger hunt list. Go to the airport and face in the direction a plane would take off on the run ways. go strait and a small bit to the left and you will see a little shack/thing in the water kinda like a mini floating water house thing. Then go under it and there will be a hole go through it, theres a water current here and go into f8 mode and follow the path in f8 mode then you will come to the end with a little room, press f7 to spawn in the room and theres a easy, medium, and hard easter egg hunt list.