[OverBoardProject]

I've never heard of that many fan clutches giving anyone problems. I would almost say it's just bad luck. I had a simular problem with starters on my daily driver (about 8 on warenty, 3 didn't work when they were installed)
However I'd be tempted to just remove the fan and install an electric fan instead.

I wouldn't call it no big deal, if it's spining like that after you shut the truck off it probably doesn't have the force to pull air through the rad when required.
I don't think that it'll fly through the hood unless the fan clutch actually breaks apart.