I have a Fishing Buddy and all I can say is it is great. It not only looks down but to the side and you can set it to let you know if a fish comes into the area. I would bet I have upped my catch by 30 percent with the one I have. While it will not tell you the type of fish it will let you know there are fish there and in which diraction they are and how far. If there is a stump say 20 yards to your side it will tell you if there are fish holding on it. I have never figured why more fishermen have not started using these? It seems to me it is very important to know what is out to your side not just below you. And the Fishing Buddy does both. I have an older model and the newer one's are even better as my son has one of them. He has the newer #4200 it sells for $219.00 The one I have sold for about $100.00 I have had it for several years. There is still one model that sells for that price. You can just hang them over the side of a boat and you are ready to do. Good Product in my view. Cabela's carry them Ron