Depth finders are a must have item for the serious angler. When read properly, they will tell you a lot about the water you are fishing, and they can dramatically increase your fishing success. A depth finder will give you the ability to fish a new lake properly and will make it easier to find structures. There are numerous varieties on the market; most units will also contain fish locating features.
It is important that if you have instructions available for your depth finder that you read them. Most depth finders features and menus vary greatly by manufacturer.
Make sure your transducer is properly mounted, and is aligned vertically at the right depth. If a transducer becomes misaligned or partially out of the water, it will greatly affect the accuracy.
Depth finders most often come with an automatic or manual setting mode. The automatic mode is recommended for beginners as it will be set to work properly from the start. The automatic setting menu will let you easily turn on and off select features. The manual mode allows you to fine tune certain areas of the depth finder. This is only recommended for anglers who have a lot of experience with their electronics.
Depth finders display sizes vary by the amount of pixels. Depending on the size of the graph, the relationship between depth and size on the screen can vary widely among models. It is recommended that you practice with the depth finder, getting use to the scale of depth on the screen. This can be achieved by traveling over varying depths and structures.
Changing the sensitivity of your unit will greatly increase the accuracy when there are weeds present. You can lessen the sensitivity to find the true bottom when there is a mass of weeds. You can also turn up the sensitivity to find structure in deep water. You will have to practice with the sensitivity over known structures and weeds to set your unit properly.