Anyone installed a GPS puck at the transom area of your RT188? I want to install a Humminbird puck with heading sensor as close as possible to my transducers. Both the rear platform and the corner of the rear deck carpet area seem problematic. The platform with the black matting is tilted about 6-10 degrees and the carpet area has difficult access, I'm assuming because of foam insulation. Anyone have any thoughts or suggestions? Any pics of your install? Thanks.