I want more stopping power from my truck brakes when I'm towing my boat. I already have brakes on both trailer axles and they're fine. I don't know what kind of pads I have on my truck, most likely basic ceramic, but thinking on replacing them with semi metallic pads. What type of pads do you guys have on your truck and if you upgraded to metallic did you notice a difference? Do metallic pads rust when dunked in saltwater?