After I broke a mast fin, ful-rac pointed out that it probably broke due to corrosion.
After close examination, shureasshit he was right
This drive was 3 yrs. old at the time. If you notice, the corrosion extends deep into the fracture. And yes, I do rinse everything off after every trip
This was the other mast that hasn't broken yet
Keep an eye on your masts on the drives that have been used in the salt for a few years