Nathan, research is king. I love to study new waters and finding structure. Nowadays, the Humminbird side-imaging takes that to a whole new level.
2. (Where's 1?) Finding fish, then finding fish in four other locations is real important. How many times have you heard. "We were on fish during practice but..." A plan B and C are as important as plan A. Sometimes, just wind direction or cloud cover will turn fish off at one depth and turn them on in another. I hope I answered your question completely but let me know if not. Blessings, -TJ