Waypoints my friend, waypoints! Very usefull for bass fishing or for that matter, any fish that consistently relate to structure. I've fished with a guy who has over 200 beaver huts marked on his GPS at Potholes alone. I like to think I know that body of water well and really I could fish 20 one day with him and not be able to find my way to 10 the next day on my own. If you've been there in the spring you know what I'm talking about.