I have an old fish/depth finder on my 87 starfire skeeter bass boat. The transducer is mounted on the outside of the hull on the transom. The wire for the transducer is ran thru the hull of the transom. I want to re-use this fish/depth finder on my pontoon boat. Any recommendations on how to first remove the wire without cutting it (it is currently already spliced) and secondly how do I seal the hole to keep it from weakening the transom as well as keeping it from leaking.