The following is an academic discussion as I am not sure how to scientifically follow up on it.
Over the years, seeing advice on fishing from multiple sources, I have developed a peeve on a few particular topics.
The first is all this advice on fishing the top or bottom of the tide. The way many people seem to interpret the advice is that the whole harbour will magically switch on as soon as high or low tide comes around. I wish it were that simple. It is not that tides do