Rob, sure they scatter, but especially when the light isn't glaring, I think they'll bite fairly soon. Jim Teeny has done this for years, move a fish witha rock or a boat, and then catch it .

In clear water, yeah, the fish are spooky to any thing. Though I've caught more than a few within fifteen feet of the drift boat in gin clear water. In winter water, though, I think they get over it pretty quick.

It was either Datus Proper or Sawyer who had some observations to the effect that a trout forgets anything that has happened more than about 7 minutes ago. They fairly quickly accept any non changing feature of their environment, including a boat, noise from a trolling motor, or a pair of legs as part of their environment. This is how blue herons make their living.

Anyway, that's my theory.