As a kid we used Rapalas when trolling for trout and on the bigger rivers. It wasn't until a couple years ago my brother and I fished an average sized creek that he showed me how good they could be there too. We had pretty much always used spinners (mostly Panther Martins) and small spoons. In the morning he out fished me 7-1, but as the day warmed up the spinners took over as the favored bait.

My other brother had the same experience while fishing with the first one. So it looks like from out experience to fish the Rapalas in the morning (4"-6" size) and then switch to spinners.