Transducer mount on Stealth 14

[Scubasteve382]

I am finally getting around to installing my hook 4 on my Stealth 14. I mounted the transducer using the built in mount for lowrance fish finders. I mounted the finder on the xwing. I have the wire for the transducer running through the hull under the seat. I just don't know how to bring the wire through the hull up to the fish finder. Do I just drill a hole? If so how do I prevent it from taking on water into the hull? I appreciate your help.