I always get my insights when explaining something to someone, or during
conversations like this....
You have to remember that fly casting is all about energy transfer. The
greatest amount of energy is going to be closest to the hand and rod. The
last part of the system that receives energy is the tip. If you haul too soon
or too hard, the end of the line may
not be able to keep up with the speed and energy of the line closer to the rod tip. The result may
the end of the line to drop in relation to the main body, and you get the
tailing loop. I say "may" because I'm working on a hunch here
Read all of the advice from the posters above, and view the rod, hand, and
line as a system. Drag racing could be used as a quick analogy: floor the
pedal too much on the line, and you're just spinning your wheels....