“One of the most common mistakes with Spey casting, is speed. If your cast isn’t lining up straight, a quick on the water self-diagnostics is to listen to how your line sounds when aerialized when leaving the water. If it sounds like a crack of a bullwhip, you are casting/sweeping too fast. If it sounds like heavy slurping, you are sweeping into your D loop too slowly. Play around with timing, omitting the urge of simply adding extra power into your cast.“