Before you can decide which fishfinder is the best one for you, you ought to know the way the fishfinder performs

1. Before you can choose which fishfinder is your best one for you, you ought to be aware of how a fishfinder performs Fishfinders use sonar technology to locate fish-or any other solid object-under that the surface of the water. Sonar sound waves go through the water. The further the sound waves traveling, the more they fan out into a cone shape and increase in diameter. Deeper water naturally causes the cone to become larger as it moves from it's origin. The form of the item struck will be determined by how much time it took the signal to head out and then bounce the audio wave echo back compared to the surrounding place. The echo will then appear in your fishfinder display and you'll observe the aproximate size, form and depth of this item. Your budget will likely be another deciding factor in your choice. Figure out how much you would really like to invest on a fish finder. Then double this. This is more realistic and helps set a genuine budget to use. Obviously, the budget is not the only consideration. There are six other vital factors to help you make the best selection for you. Review all of the following: DEPTH RATING Every fishfinder is rated for a specific depth. The rating will indicate how far down the signal will yield effective soundings based on the intensity of the signal. But you should be aware that the depth ratings provided are for perfect circumstances in fresh, clean, relatively clear water; unless it states otherwise. When fishing in salt or murky water the effective thickness will be less than said. Just like most other items, however, if you would like a unit which will penetrate deeper water, that unit is going to cost more. My recommendation is to purchase a fishfinder unit which has a thickness of at least 10 percent greater than what you feel you will actually need. IS THE TRANSDUCER INCLUDED? One wants to check the packaging for your fishfinder carefully before makinf a purchase. Many fish finders come without a transducer so that you need to check the included accessories prior to purchasing. So look at that in the overall price. You will need you, the other or both predicated on to what and where you are fishing. Single frequency transducers function best in shallow coastal waters or inland lakes. A transducer with dual frequency provides you a greater frequency transducer for a smaller cone in deep water. You have to purchase the correct transducer, because both will generate information on your display, however you want the information to be true. Installation of this unit also has to be factored in here. Additionally, you need to decide if you'll mount it to the transom or go through the hull for optimum clarity. Many firms make single frequency ducers.Most of these units are meant for use on smaller ships. They are meant for use on rivers, streams, or inland lakes. A transom bracket unit is usually easier and less expensive to set up. Trasducers can be purchased in both single and dual frequency fish finder versions. A fast moving boat will cause disrupted water at the transom and influence the use of a transom mount.Clarity usually is affected once your ship reaches 10 knots. However, this does require putting another hole in your boat hull for installation. And they're really only warranted if you require bottom reading at very substantial speeds. Through the hull dual frequency transducers are advised if you're planning to fish deep water and will need to browse the fish at high speeds. For anyone that has a little boat or won't be angling at really substantial speeds, go with a mobile unit or a transom bracket. The money you save will probably be better served by utilizing it to fill up your boat's gas tank! POWER CONSIDERATION

2. Usually, more power is always a fantastic thing. When comparing units that are equal in the rest of the features, the cheaper unit will almost always have less electricity. For the best accuracy and clarity go to your high power as that's what determines the rate of the sonar return signals. My recommendation is to buy the highest power rating you can manage with the other variables being equal. To put it differently, consider units which have whatever you want and then compare the energy rating of all of those units to determine which one has the highest energy rating. DISPLAY - SCREEN AND RESOLUTION When you're looking at the different possibilities for the display, consider this. Color displays are easier to see in bright sunshine. Additionally, the greater the resolution, the clearer the image you will see on the monitor. My recommendation would be to look at several components in your price range with the features you would like and then buy the unit with the higher screen resolution, in color. 480x480 is perfect, but you do not want to go any lower than 320x240. SIZE OF DISPLAY Very similar to electricity, a larger screen will probably be better as long as it will fit where you need it! Before you can really determine the ideal screen size for you, you need to assess the area where you can install the screen unit. That will provide you the largest display unit you can buy. A larger screen will equal a heavier price, obviously. But screen size isn't absolutely everything. Some really great fishfinders possess 4" diagonal screens and work fantastic. READ THE REVIEWS, BUT ... It's one thing to read the fishfinder reviews out there, but hey, take them with a massive grain-or possibly a block-of salt! There is not likely anybody who has possessed and used each of the different model they write about. Most likely the author works for a distributor or manufacturer. Instead, start looking for unbiased sources that present the actual facts. As an example, eFishBox.com includes a fishfinder inspection page which shows the specifications of every one of the fishfinders produced by the industry brand name leaders so you're able to make real comparisons depending on the actual features. Make your decision based on your needs and a solid understanding of the features you need, not a person who is getting paid to endorse a particular item.