My Ben Oc clipper 311, has the depth and speed sensor located just aft of the water tank beneath the bow bunk. I was told to de foul it, I could unscrew it in site, in the water! I looked at the waterline and it appears the top of the pot it lives in would be beneath the waterline and thus flood the compartment if I were to remove the sensor and wheel from its housing. Any ideas, other than getting in the water!