I went to a new trout stream yesterday. Well, new to me. Anyway they trout were really hitting somehting in the water. It was in KY and I don't have my out of state license,so I just watched and didn't get to fish. But there were tons of Swirls showing up in the water and occassionally a splat where they took something either off the top of the water or just under the surface. My question is, is there any good way to tell the difference or is that something only time and experience will tell. Or do you just guess and go on?

thanks in advance,
hNt

PS soon as I get the $ I'm going to be getting some out of state license. I can't wait.