My friend has let me use it and i do know that they fly straight, but I also prefer regular fletching for the following reasons: They make a little more noise in the air, the Fob pops off when it hits game, but this means it reduces your kenetic energy, and even if your arrow goes through game, the shaft will be impossible to find and your 20$ broadhead will be lost forever. I go with the regular fletching.
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.