vexilar fl 18 is as easy as it gets or marcum 3 is as good . most of these units are shown working on you tube you can watch videos of operation and technique real good teaching aid if you havent run one once you do you wont go without imo flasher is way to go after running one a while you can determine what kind of bottom and if there are weeds or not good luck i forgot hummingbird makes a great flasher as well just make sure whatever you buy has a zoom function on it like fl18 you wont regret it and good luck fishing