One problem that many fly casters struggle with is knowing when to release more line. If you release too soon, the line moving up through the guides “unloads” the rod, causing your cast to crash to the water too early. If you release too late, you don’t have enough time to shoot before you need to start the backcast.
In this great how-to video from the Orvis Fly Fishing Learning Center, casting instructor Pete Kutzer explains two ways you can determine the right time to release the line–by sight or by feel. He also explains why proper line handling during the cast is so important.