Quote:
Therefore you have S.S. tabs with S.S. mounting screws,no dissimilar metals,little or no corrosion, and you are adding a zinc making the difference and the zinc being the most active it is eaten away. Save your money buying zincs and leave the tabs alone. Do not paint them or put zincs on them and they will give you many years of service.
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But wouldn't this put the outdrive/ouboard at greater risk since its aluminum becomes the least noble disimilar metal in the equation?
Why not just include the tabs in the boat's bonding system?