I didn't touch the surface of the sign, so don't know if it was sticky or not. I didn't get any pictures either, the first time I've forgotten my camera. I did mark the location and will go back this weekend with a camera and post the pictures. I did try and see if the tube would come off the nail, it would have with a little work but would have distorted the top hook area, but I didn't see any entry place for insects. I think "scuba dude's" LandNav might be the ticket.