So, I got the Lowrance sonar and the fittings are huge requiring a 1" drill hole. This is a sterndrive, so no little holes to bring it through teh transom. There is a spot up high just below the swim deck that is nothing, but fiberglass. The owners manual confirms it requires a 1" hole; it will be 3-4" above the normal water line. Being only fiberglass I cant really put the plug back in and epoxy it in with the tiny hole for the line to pass through. What do you recommend? My thought is to just get a stainless clamshell vent on the outside with the opening facing down and silicone the hole of the clamshell??? I am really surprised that they dont have some sort of special fitting where it only needs a hole the diameter of the wire as I have seen on others I have dealt with.