I have a HI-Viz fiber optic sight, its magetic with the long colored flute optic.  The other day the first turkey busted me due to the sight glowing in the woods.  I pulled the flute out and just used the open sights without the fiber optic.  I was like a Ghost Ring sight almost, but just at the end of the barrel so you could see everything.  I will be using it next year, all for $13 bucks!