My boat has three sensing through hulls - two of the spinning type for a speed sensor (or the like - what else would there be?), and one of the other kind for a depth sounder. The problem is that all three of them have been disconnected by cutting the wires at the through hull. The through hulls appear to be some sort of wax like substance with the wire passed through the wax to a connector beneath. What are my options? Can the wax substance be removed to get at the connector with the boat in the water? Or do I have to haul and pull the whole thing? The boat is a 1980 Santana 35. None of the through hulls leak.