Trev,
As mentioned earlier, it is still recommended that anglers cast all session- even highly skilled anglers have trouble identifying these windows that help, so there is no easy description on 'when' for a visitor to follow, apart from continued casting/trolling.
Eg, many mention a dawn/dusk window; so how long is dawn and dusk?, and in reality, when dawn is over, the 'window of opportunity' may just be starting. Windows are millimetre measurements, not inch descriptions.
To be honest- current stumps many an angler, and we all continue to do our homework on that very topic- and I think that the 'window of opportunity' subject is one that is left way down the list as it is way more refined than realised,
to the point that further info on this topic could be the act that spoilt the party. It may take the fun out of fishing for some, so I will close that info in true fear of the info killing the fun. serious.
On this very topic, the
'under the spotlight article' describes a huge amount in relation to this subject discussed here. The sweetwater fishing site article link could be added under here once again for those who missed it, or missed the points within it. I feel this article is one of the better pieces I have sat down to create.
Johnny
http://www.sweetwaterfishing.com.au/...ic,3730.0.html