I have shot skeet in the rain, in heavy snow, in heavy winds, and when it was nearly dark at mid afternoon just before a storm, but on Sunday we shot in the heaviest fog that I have shot in. With no wind, and the machines set properly, it wasn't as hard as a person might think, but it was very difficult to see small chips when some people shot late and broke the clays as they were approaching the far house. We were using all orange targets which helped. but there certainly wasn't much contrast.