I bought a little 1 gal plastic 'dustbin' with a lid, the sort used as waste paper bins. I 3/4 fill this, add 2oz Salt-x and soak everything in it. For a hand spray bottle, I add 1/2oz salt-ex and top up with water and spray the rod fittings, rings, etc., and any parts of the boat which may be susceptible, e.g. stainless fittings, trim tabs, engine and hydraulic kit, etc. If you don't wash it off, it leaves a film which gives a degree of protection next time out.
After a successful day, after washing down the inside of the boat, I also spray the deck with Phew-x which keeps down the niff of a boat interior under a cover and hot sun.
Hope this helps.
Terry B.