We replace all of our factory crankbait trebles with Gamakatsu round bend treble hooks. On most of our larger crankbaits we'll replace the rear trebles with a Gamakatsu single hook. The Gammy hooks are made from a high quality steel and they rarely rust like a standard hook will. They are also super sharp right out of the box. Using Gammy trebles will reduce or eliminate the rust issue and increase your crankbait hook up ratio as well. They are a bit pricey but considering what crankbaits cost nowadays the expense can be justified. Like everyone said, dry your baits and boxes before storing them.