I'm also taking only primary trades but my thinking is not to avoid the pairs that are trending. I'm actually looking for them. I'm trading the strong trending pairs only in the direction of the trend. If a pair is ranging, I trade it both ways. I put a 200MA (watching the slope) on my charts to help me decide and I like to zoom out the chart to see the overall trend.Ignored
This is what separates intelligent traders (like you) from foolish ones (like me), where I see a problem you see an opportunity. Traders like all other creatures should adapt to their environment and not to expect the environment to adapt to them. I suppose we got bogged down too much in the mentality of counter trend trading, whilst forgetting that trend trading is a very profitable endeavor as well.