I've fished for springers pretty hard about seven out of the last ten seasons on my home river (as a weekend warrior, "home river" is a bit of a misnomer)which gets a small native run of springers. You really have to be lucky and persistent to get your fish. Due to its glacial origins the river tends to stay cloudier and colder than most rivers at that time of year which works to my advantage.

My experience has been that under clearer warmer flows the bite-window is much smaller. Seemed to hook the majority of the ten or so fish I've hooked under these conditions in the first 90 mins of daylight. Never hooked one in a hole that was receiving direct sunlight in the clearer and warmer conditions...

The good news for me is that, as I said before, the conditions tend to stay cloudier and colder. Out of the maybe 25 fish I hooked in these conditions 5 came in the first 90 mins, five in the last 90 mins and the rest spread out through the rest of the day. Pretty spread out really...

My theory (heavily adapted) is pretty obvious I guess...Cloudy and cold, pound it all day...Clear and warm, pound three likely holes in the morning, take an extended nap, drink many beers, pound it in the evening.

The other wild card is the tides. I play the tides game alot on the lower river. Fish will move into the lower three holes on the river and mill around on the tide change. This can be pretty productive no matter the light conditions.

I hope this applies to your fishing situation.

My experience, for what its worth to you.