Your camo must match the experience of the bird. Some will stand in the road and gobble at an F250. But I have also watched a flock of hens feed past me within twenty yards while the tom spotted me at sixty and veered off, staying in plain sight, but just out of range, only to rejoin his hens once they passed. The problem was that I had hunted him unsuccessfully before and he had simply learned to recognize my camouflage. On another occasion, a bird escaped after a bad shot. I called him up again later in the season, and this time resolved to wait until he completely cleared a bush before shooting. Nothing doing. The instant his eye cleared the leaves, he spun and flew down the hill. I was stunned. During his approach, he did not appear to be looking for me, yet, once in view, he recognized me within a tiny fraction of a second. And this was while he was following a hen that passed, completely unconcerned, within ten yards. It was the end of the season, the grass was tall, and I was tucked way back in the shade. The simple fact is, once a turkey knows what to look for, he will see it. The good news is, most gobblers never have the chance to revisit their mistakes. But hens do, and that is why they can be such a challenge. In any event, I would avoid the glasses, if possible. By the time my turkeys approach shooting range, my eyes are tiny slits. Glasses are much harder to hide. That said, this may be a small price to pay if they save you from a load of pellets...