I am mostly self-taught, but I have spent several hours over a few days working with a certified casting instructor in the past. At that time, I was (am) a relatively proficient fly caster, but the instructor was able to point out several weak spots in my form that needed improvement (e.g., a little too much wrist and a bit of creep on my back cast).
I can and do cast using a double haul when the opportunity presents itself; but, I must admit that I don't use a double haul often in most fishing situations, hence my original question seeking advice. One weak spot in my ability to haul and execute long casts is managing excess line prior to shooting it. So, I am wondering whether others who are proficient with long casts could offer insight into how much line I should strive to carry in the air vs. how much I should be shooting on longer casts. I know the correct answer is probably that "it depends", but it doesn't hurt to have some sort of rule of thumb to shoot for (no pun intended).
