[dgax65]

I use Goop to seal up the cable clam. The rubber plug will squeeze down, around the cables and prevent most of the water from getting through. addition Goop seals it completely. Not necessary, but I like to keep the interior as dry as possible. Before applying any Goop, make sure that the FF is fully operational and getting signals from the transducer and external GPS antenna (if applicable). If using an articulated mount, such as a RAM, you also want to make sure that you have enough slack in the cable(s) to allow the FF to be move throughout the full range of travel of the mount.