05-18-2011, 01:00 AM
Here is my take. I would NOT get one for the fish finder. I do think that speed is very important for trolling. What I did was I have several GPS's and I keep one in my pocket. I can tell speed distance traveled and time traveled. If I get into a school of Crappie I can hit the mark button and set a waypoint. Then I can make sure I stay on top of them with the GPS. You said you can get a speedometer for the 30 dollar range. You can get a used GPS for the same money or a new one for about 100. The more expensive ones with maps are fantastic I love mine. So if it were me I would go GPS all the way. Ron
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