If you spend anytime on densely brush lined trout streams, this cast is an
essential part of your presentation. It is fundamentally simple and with
very little practice one can become proficient enough to handle the majority
of situations the cast is designed for.
One must have water to properly practice and develop his or her roll cast.
A lawn, mat or other dry surfaces do not provide sufficient enough
resistance of the fly line to effectively "load" or bend the rod during the
cast.
The beauty of the roll cast is that you do not require any space behind you
for the line to be back cast into. It is an especially nice cast to use
with the wind at your back. All the fly line remains in theory, in front of
the plane of your shoulders. Before you actually take a rod to hand try
imitating the cast by using this practice motion. Pretend for the moment
you have a small hand axe in your casting hand. You are going to "chop" a
large tree limb that is situated an arms length distant and just slightly
above your waist height. You know from experience that you will not be able
to cut the limb with one fell swing, but a series of blows will do the job.
You bring the axe up, cocking your arm by bending your elbow slowly so as
not to hit yourself or anything behind you. Your elbow stays in front of
your body and well out in front of your shoulders; elevated as far as
necessary to give you power to hit the tree limb. The imaginary axe may be
well above your head, with your hand being about ear level. You stop the axe
completely from its backward motion while at the same time aiming for the
limb. The stroke of the arm is downward towards the limb, with a little
break of the wrist added just as your arm becomes straight, just prior to
the axe hitting the limb and stopping abruptly. Practice this in slow
motion at first, increasing your power and speed when you feel comfortable.
Remember to stop the arm completely just about as your hand gets to waist
level.