While there are many kinds of casts used by fly anglers, the roll cast is an essential arrow in the quiver. Ben will teach you a roll cast method that is effective and easy to remember.
As you just saw the roll cast is best used when you don’t have much room behind you. So if you find yourself in a tight spot the roll cast is likely your best option.
To do a proper roll cast start with your line out in front of you and bring your rod tip back and stop. This will create what’s called a D-Loop with the rod being the straight part and the line making up the curved part. Then cast the line straight out. When done properly the line and leader will fall on the water in a straight line.
This cast can also be used to retrieve your fly or when casting from a boat. Try practicing this cast on your local pond or river and let us know how it works in your neck of the woods.
Source: HugeFlyFisherman