This is a great question. It really hits home today too. Fished a derby over the weekend and chased an a-rig bite that we'd been on in an area where it just wasn't happening yesterday. We did catch a couple, but we also spent hundreds of casts and 3-4 hours in what ended up being a really unproductive area. The water was gin clear and bites were very few and far between. Both of us were convinced that we were doing the right thing and frankly it may have paid off by waiting for it to warm up. It was a big gamble and it didn't pay off. We ran to dirty water and caught a ton of 14 1/2 inch fish. Those things were pretty fat and heavy, but just short. In hindsight, we should've chased the colored water from the very beginning and stuck to our guts and not the "plan." I'm one that will stay too long in an area if I'm convinced that they're there. I like to make repeated casts to the same spot, especially shore cover like a bush or a laydown.