no offense, but this really didn't help me, i had to do most of it from tinkering=/ to hopefully answer any questions that i had:
to cast and use bot in general, hot key is default at the (-) key blizz assigns, watch the button it tries to click if it doesn't work.
200/5 doesn't work for EVERY computer. mine is set to 50/20. tinker with the numbers if its pulling in two early/thinking it's caught something when it hasn't.
if the mouse isn't going to the bobber when you cast out, try selecting a different color. I use the red feather, and you don't have to screenshot and pull into paint etc, just have wow in background and have the fishbuddy window selected, hover your mouse over the red feather where you think is good, and press F9. always try for a unique color, if theres something similiar in the surrounding area, thats why the mouse isnt going to the bobber. If its not right clicking or pulling in too early, thats when you tinker with the splashtolerance. Raise it to an extreme low/extreme high to test the results and see what happens, as i said, mine ended up being 50 on this machine.
Hope this helped clarify some issues.