What I've picked up on glassing is slow scanning of the area. Pick out and object 2 objects and scan from point a to point b. At least thing works for me ��. Next is a good set of binocs. Clear glass helps pic out objects you wouldn't see with a pair of tascos. Go to the nearest sporting goods store and ask if you can take a few pairs outside. The reason to go outside is that the lighting is different in the store compared to outside. You can tell a big difference in good glass and bad!