Sounds like someone that is looking for free legal advice on the 'net.
They bit off more than they can chew and run with a sketchy crowd. Instead of parting ways they are trying to have their cake and eat it too and are afraid to jettison what they think are friends. Friends are few and far between and if they live long enough they will discover what I mean.
Each state will have their own laws regarding bullet resistant vest. It's best to consult a legal expert in your area to get an answer pertaining to such things.
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.