Need help going from fresh water fishing to salt water fishing?

You can use your freshwater gear, just remember to do a fresh water wash down and then oil your reel each trip. Gear degrades a lot faster in saltwater use versus freshwater use. Fishing from a kayak, I would stay in the flats and work silver or gold spoons for a while. You can use prawns or any cut bait as well. Just fish it off the bottom, no need for bobbers or chum. You should probably be using between a 1 and 3 oz weight depending on you string rating and the weight of your rod/reel. I usually use a steel leader due to some saltwater fish having sharp teeth that can cut your line. Don't try and make it too scientific, it's basically the same as freshwater fishing but with a few different tweeks to catch specific fish. Hope this helps.