We had dense fog and .25 mi visibility reported yesterday morning. I think the 1/4 mile was being generous many times. With the first student we just worked on ground maneuvers until the fog burned off, then did some patterns. Here are a few photos after we took off.
Then I worked for a couple hours with another pilot doing advanced maneuvers in the Enstrom. Precision autos were quite fun. I'd call out the when to enter and where the target was, then help him make the target when needed. We worked on stretching out the glide, slow way down for a steep descent (then build speed back up with enough altitude to get a good flair at the bottom), backwards when needed (and enough altitude), big "S" turns, long shallow flairs, short aggressive flairs. Quite a good workout.