Davey, the link below is to this sites "Articles" section. There we wrote about the procedure we use on our 210 CC.
We have added a step to our procedures. Using a garden pressure sprayer, we spray "Salt-Away" on the brakes after launch, after retrieval, and again at home when we clean the boat. Our trailer is all aluminum, including the axles, but we do worry about have good brakes. It just takes a few minutes, and it could help us avoid serious problem's on the road.
Hope this helps.
Launch/Recovery Procedure List