I had a set of sight through yellow lens cap covers a couple of years ago, and I liked them fine. They gave a good clean sight picture, and they protected the lenses at the same time. I left them on. I was hunting deer gun first weekend on the Meade property, and realized that somewhere along the 3 miles we packed in, I lost them. The bungee cord connectors seemed a bit weak, and they fell off somewhere. I have not been able to find a pair in the right size since.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.