I just want to add that the water was NOT just invisible, it WASN'T there! LOL So just instead od us walking around the room to anywhere we wanted, we just rode there in our logs! LOL
No that was Maxxkid's room and is not very difficult to do. Just leave a river piece at the entrance of the room and when someone enters they land in a boat. At that moment put the river piece in another stop in the room.