Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
...you can lower and raise the rod quickly, changing the drag pressure, and leaving the reel on a lt setting. The benefits of using the rod really come into play when you have a fresh fish in close thinking you might be able to net it, and it suddenly bursts off. A quick drop of the rod allows minimum drag pressure, and line to run out...
The key to landing a fish that is larger than the breaking strength of the tippet is to keep steady, even pressure just below the breaking strength of the line. Knowing just how much pressure is 75-85% of the breaking strength is an art gained only with experience.
Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object.
— Archimedes of Syracuse