Heres an interesting read on the solunar tables.
Some guys use the tables and some dont. However it is based on science and the earths postioning to the moon.
There is a lot more on this in the info svs reference library forum. specifically Marine resources
A search will show some good discussion on this as well.
Simply put during extreme tides predatory fish like striped bass either concentrate during low or find places to hunt they normally dont get to on the flood stage.