I have been doing a lot more drift fishing now that I finally have a boat and it's getting expensive having to replace my sinkers, swivels, and hooks after every trip. Not to mention all the line I'm losing when I break off. When I first set my lines out I leave them four or five feet off the bottom and everything's fine until the depth changes. I'm constantly having to reel my baits up and lower them down as the depth changes to avoid getting hung, but several of my lines will usually snag up before I can tend to them. Is this a pretty normal thing, and is there anything I can do to stop it? How high off the bottom is too high for cats?