Hey Guys/Gals, I was told by the electronics person at Gander Mtn. the Garmin rep told him the best way to mount a thru the hull tranducer puck is to use a piece of PVC pipe and epoxy it to the bilge area where you want the tranducer ( straight up ). Put the puck down inside the PVC pipe then fill the pipe with mineral oil and cap it off. Has anyone ever heard of this or tried it????????Grubby