I put my radar detector, spot and a ram holding my leds for the radar detector up high to be more visible.
It shakes but nothing appears to be breaking... I was looking at it yesterday and there's some movement in the lower rear slider so I put a couple washers there to allow for more of a hold. Once I get the shield where I want it I won't be moving it so I'll replace the wing nut knobs to locknuts and maybe tighten it all up.