During my years of boating in saltwater I have found a few tricks that help in the never ending battle against corrosion especially when it comes to electronics. One thing I found that seems to work is plasticote. After replacing 2 trim motors in less that 10 years I decided there has to be a better way. Why hasn't the manufacturer come out with a process to keep these motors from deteriorating in saltwater. However, it isnt in their best interest to make a better product and reduce sales, so I guess its up to us backyard mechanics. About 8 years ago, i decided to try a product called plasticote, to increase the longevity of my trim motor. For the test I went to my local auto store and purchased a can of plasticote and put 3 coats of paint on it and let it dry. 8 years later the motor still works well and i havent seen any signs of corrosion. I put this on a new motor. Also be careful when handling motor and installing so you dont scratch it thereby inviting rust. Be sure to only paint portion exposed to water otherwise you might loose your ground. If your motor doesnt work after painting check to see how motor is grounded- mine grounds thru the frame.