Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to cast a fly fishing rod [title] Load your fly rod. [step] The weight of the line propels the rod. Fly rods are much more flexible than spinning rods.

Ending1: Almost every reel has a different amount of hook-the better the better. That being said, there are still many different kinds of fly rods, and each has the same principle. Ending2: Your fly rod will not cast properly if you do not feel the rod bend and unbend in your hand. This is called " feeling the rod load " and can sometimes be a difficult concept for beginners to grasp. Ending3: Spinning rods are used to steer your rod up, down, left, and right using momentum and force. [substeps] Fly fishing rods come in all sorts of shapes and sizes. Ending4: You can usually fly your fly rod by threading it into a pulley that's hung nearby. Note that if you cast your fly rod in a grounded container, there should be no way to change the weight of the line.

Answer format: ending1/ending2/ending3/ending4