A GPS antenna puck works perfectly well through fiberglass. When I installed mine, I stuck a strip of Dual Lock to the bottom side of my deck and a piece on the top of the puck. I then just snapped the two pieces of Dual Lock together. So far, it has stayed in place. Installed end of 2012. If I need to remove them for some reason, they will easily un-snap.

 
Free business joomla templates