Everyone gets stuck in trees. Not everyone gets loose without cutting the line. Be one of the ones that do.
Point your rod at the fly.
Strip the line so it is hanging like a clothesline, making sure you don’t pull it taut.
Pinch line at cork grip.
Reach in front of rod hand, and grab then pull line, shaking the tree and unwrapping the line.
The next step? Work on your aim. And your cast.
