One of the things that I am enjoying the most about fly fishing is the fact that you are constantly moving.  Another fun part is that you are able to cast to exactly where you want the fish are...and if you see something off in another direction, you don’t have to reel the line all the way in and then hope the fish are still where you saw them.  You just yank the line out of the water and cast it where you want to go.  It takes some practice to be able to do that consistently, but for the most part it’s pretty easy.