I upgraded my old front finder to a Fishmark 320. I've had it on the water twice and could use some help dialing it in. I'm used to my old dummy proof Humminbird. Course when I'm on the water I fish and don't spend time dinking with the finder. I'll be on Rosey from about 10 am Saterday for the weekend. If anybody's on the lake and could offer some hands on advice I'll be on the red Ranger with a 150 rude. I am planning to pull the book out while on the water this time and see if I can learn the settings but some tips would help.