Spot on. I'll add another dimension, though.
One of the huge attractions that dry fly fishing for trout holds for me is that the fish
are visible, because they are rising to the flies and making both their presence and location known. On many runs, the fish will take positions based on pecking order (the biggest fish take the best lies) and remain there throughout the duration of the hatch. This makes for very interesting fishing as it offers something not too dissimilar to a static pool table layout, except that the "balls" only rise to the surface of the table every few seconds and then disappear again.
The idea isn't just to catch a fish, but to try to take every fish in the run. There's even the equivalent of a money ball, which is the biggest fish in the pool, holding in the toughest lie. You can probably catch every dink in the pool and that big guy will keep on rising, but when it's his turn to see a fly drifted over his head, you usually only have one cast. Any slop in the cast, a bow in the line that drags the fly unnaturally, a fly pattern that's not perfect to match the hatch (in size, color and silhouette), too heavy a tippet section, 4" off the spot he is rising at, etc. Any of these things can put that big fellow down for the day.
You may see him follow the fly and not take it. Giving him ten minutes to start rising again and then tying on a smaller fly often works. The newbie will pound that spot over and over, working the water into a froth to no avail. If he changes flies he will probably tie on a larger fly, which almost never works. That old buster brown has seen millions of naturals pass over his head like a conveyor belt at a cafeteria. He didn't get that size by making foolish mistakes.
If you are lucky, he'll tip his head up and sip the fly in in a way that belies his size. Smooth and efficient - like a good stroke. A small trout will snap up the fly and duck quickly back to safety. The big trout takes a dry fly with quiet conviction most times.
So you know this fish is big, and all you have to do is lift the rod and his weight sets the tiny barb. You can feel his weight then. He may turn for the rocks, he may swim slowly downstream, or he may just explode when he feels that barb. You have to be ready for whatever he presents. One thing for sure, he's gonna run eventually, and you better have your reel cleared and the slack out of the line or you'll never get him on the reel.
When he runs, you let him run. You just fooled him with a 6X mono tippet at the end of your leader. 6X is .005" thick, about the thickness of a human hair. It is rated at about 2-3 pounds, but that's the line itself. Your knots are weaker. Even the best knots tied by the best anglers (a whole other skill set that I won't go into here) only retain about 80% of their original strength, and that's only against a steady pull, not a violent escape attempt. Needless to say, 6X ain't gonna turn this guy if he don't want to be turned. He's got some big shoulders and all that water moving against his sides. Try to horse him in and you and your $2 fly will soon be parting ways, leaving you with a straight rod and a very heavy heart.
He may scream downstream, and you just point the tip of the rod at the fish and let him have his way, the click-drag on your $200 reel screaming right along with him. Keep him on the reel, though, because he will soon realize that swimming downstream didn't work and he'll be charging back upstream any second. Fly reels are simple single-action devices, with no multiplication factor geared in. One crank of the handle give you one rotation of the spool, nothing more, no 4:1 retrieve ratio or anything like that.
If he charges hard upstream, you will be reeling like a mutherfugger and you still may not be able to keep him on the reel, especially if he has run all 90' of line out (it happens with big fish on big pools) and you are into your thin backing material. Any slack in the line and it will belly downstream, creating a lot of drag on the fly line, breaking off the delicate tippet section all by itself.
After several long runs Mr. Brown is starting to get tired. You can lead him through light currents, but if you are in heavy water you'd better be prepared to do some skillful wading downstream to him because you won't pull him up a strong current with 6x tippet. When you are finally close you will get your first glimpse of your quarry. He may not be as big as you thought with all his fuss. He may be so big you almost mess yourself when you first see him.
Whatever, you now have one of the biggest challenges ahead of you - getting that bad boy in the net without breaking him off. Tired as he is, he will freak if he sees that net coming at him. You shorten the line so that when you raise the rod it will pull him over the net below him and he won't see it. Once he is there you make a smooth downstream move and lift the net at the same time and he's yours.
You admire him for a few seconds, then you remove the fly and assess any damage you may have caused to him. He will be breathing hard and will not have good equilibrium. If you just let him go be will likely turn upside down and float downstream and die somewhere. You didn't get this good without knowing just how precious this resource is, so you take the time to hold his head upstream in the current to get water flowing over his gills. A big brown fights a long time, and the generally accepted minimum time to revive him is about the same time you spent fighting him. I have spent up to five minutes reviving a fish before I was comfortable letting him go, but as a responsible steward of the fishery I do everything I can to ensure his survival for the next guy to come along and catch. Catch-and-release fishing is a simple fact of life on most waters I love to fish.
Anybody still think it sounds easy?