Have you used the CTX yet? Have you metal detected a lot before with other machines? You’ll get 1001 different opinions, because people like to opine. Me too. The first thing you should do,IMHO,is to go through ALL of the settings,menus and screens and KNOW HOW to navigate the machine. If you don’t,you’ll be at a disadvantage. You don’t have to fool around with the GPS stuff but the critical menus have to be second nature.
As far as specific patterns go,I know what I use,I know what works in southern Wisconsin for ME and it found a lot of silver last year and the year before. Much of that had to do with site selection. You can have the grooviest pattern known to man and if you’re in the wrong place,you won’t find any old coins. Makes sense,right? You’d be AMAZED at how many guys try it anyway.
Find an old site,put it in the factory Coins Mode,Auto +3 and start swinging. The general consensus is to do this for many hunts til you get the feel for the way the machine does it’s thing. I could tell you what settings work for ME but that doesn’t mean you’ll find them to be what YOU need or even like.
Good luck however you do it,with the CTX you can’t hardly miss.