on my 88 Stratos, i have an oooooold lowrance up fron, and an oooold humminbird flasher. i don't feel like i need to spend a ton on electronics, i've heard good things about Eagle products and they are very affordable. i'm lookin at either the Eagle Cuda 128, or Cuda 168, seeing as how i only want depth, temp, and a graph that shows the bottom and fish. a guy told me i need to keep the flasher b/c it is better to use while running the boat. my idean was to put both a graph up front and on the console to replace the flasher. I said all of that to ask this....Do I need to Keep the flasher, and would it be a bad idea to have both the flasher and a new digital fish finder on the console?