For a while I have be periodically soaking my booms in a tub of fresh water in an attempt to get out the salt of the heads and slow down corrosion. It occurs to me though that I have no rational basis for doing this. It just seems like a good idea. I don't know if it's really useful or not. In fact it might be worse, no doubt creating a weak saline bath...! But then I don't understand the role of salt water in aluminium corrosion at all. For instance, is it galvanic corrosion that weakens booms, or something else?

Anyone have any opinions or info?