The reasons I prefer the flasher are 1) It is in real time, there is not a slight delay. 2) I like the color differences that let me know when a fish is near (or at least at the same depth) my jig. With my graph, it only showed a black line, this could be a fish or it could be my jig. The screen would look like a heart beat monitor that was "flat lined" unless I jigged my pole. I had to look only at there the graph started, not at the center, that was how history. If a fish came up from the bottom/or down from the top, you would see a diagonal line (history), when it got to the same level as the jig/came in at the same level, there was no change in size, color or anything to let me know that the fish had come to pay a visit. I would just watch the tip of my rod then and wait for a bite. Once I learned how to read the graph, I caught more fish.
When I bought my first Marcum flasher I was quite
, frustrated, and felt that I had wasted my money. I had no clue what was fish, the bottom, artifact/noise, my jig, etc. I finally met a guy who had a vexilar, he gave me a few pointers. It took a bit of learning to read a circular dial and understand what I was reading, then things got better! Now I adjust the sensitivity/gain so that my jig shows up as a yellow line. If a fish comes in the periphery or is small, it also is yellow. As it nears, or is medium sized it turns orange/green (depending on the flasher), when it is close or large, it sends a bigger signal that is red. When a fish is at the same depth and presumably right next to my jig, the color combo is yellow-red-yellow. I watch the end of my rod and anticipate a bite! If the fish shows up above my jig, I reel up to it and bam! If a fish is below my jig, I lower and bam! If I am looking for bottom hugging fish, I zoom in on the bottom (2.5" separation) and and focus on the bottom 5'-10' yet still have some visualization of the rest of the column (though not that great).
As I mentioned earlier, with a flasher it is instantaneous, if you look away and a fish flashes in and out, you'll not see it where a graph will still show a blip on the screen. New graphs have color, I have not used one of them. In the extreem cold (30 below), my graph would not work, the flasher does.
Hope this helps. I'd recommend hooking up with some one who uses the different types, watching them use it and learn about them, then make your decision. I know I hate going out without one now (that's why I have several for my sons or whom ever I take out, I don't have to give mine up to be nice!).
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