I think that's a great idea to include 16-17 yr olds in this category. I know there are a lot of 16-17 yr olds who are seasoned hunters already which is great but by raising the age helps encourage some kid's who may be on the fence or who haven't quite got the confidence they need yet.
When calling coyotes, more often than not they will circle on a target they are
coming into and approach from the downwind side. Presumably they do this in
order to align what they smell, with what they are hearing.
This means that you should always have your downwind side camouflaged and have
an open shooting lane. If the area is heavily covered the coyote could come in
take a look and be gone, with you none the wiser.