Since none of y'all have to dunk your trailers in salt water, I figure you don't worry about this, but for those that do, how to you reduce rust on your leaf springs?

Seems I have to replace mine about every 2 years as large flakes of rust start falling off them.

Rinsed after every salt water dip, and I spray PB blaster and/or WD-40 on them every month or so. Tried axle grease, too but to limited effect. Wondering if painting them would help, or someone's suggestion of melting toilet ring wax (melts around 160 F) and painting it on the leafs.

Yes, I must be cheap since a leaf spring set is like $30 USD each (every other year)...