I follow the thought that before a storm there is always high pressure, as the storm nears the pressure soars. It creates a feeding frenzy in animals because they don't know how long the storm will last. I get pretty I depth with it (and have convinced a few really seasoned and much older than me) of it. I can usually tell you exactly, and I do mean exactly, when the bite will be the best and when it will totally die.
The guy I went with to winnipeg this year is an absolute believer now. I called each day to the hour. He is convinced now because we fished all day for a week, never gave up all day long. He told me at the beginning of the week that he was gonna prove me wrong by weeks end. Instead we spent the whole 8 hour ride home talking about how I perseeved what was happening and why.
I guess in a nut shell, if the pressure is over 30 and moving up you are gonna have a good day....well, it's so much more than that!
if you want to know more than pm me your number and I will give you a shout. I am gonna be really busy this weekend but would love to share my thoughts on it with you.