Duck has it right. Any tailwheel aircraft will groundloop if you let it. As the speed decays, there is a transition zone where the airflow is too slow for the rudder to have full authority, but too fast to steer with the tailwheel. All real-life taildragger pilots learn this. The key is to plant the tail firmly on the ground so you start the tailwheel working for you before the rudder stops working for you.
A good taildragger 3-point landing is done at stall speed. To execute it, set the aircraft up in a nice stabilized approach about 20% above stall speed. In the corsair, 120 works good for me. Use power to control your rate of descent while keeping your airspeed constant(remember the old rule: Pitch for airspeed, Power for altitude).
You should cross the runway threshold at about stall speed plus 10%, about 10 feet above the ground. Let it float down to a few feet above the ground, then put it in the 3-point attitude and hold it there. For most planes, this is where the top of the dash is even with the horizon. If you have any doubt, just get in a parked plane and memorize the view. It should look the same when you flare for landing.
Put the plane in the 3-point attitude, and then try to hold it there as long as you can. Don't raise the nose, but don't let it drop. This will require constantly pulling the stick further back. The stall horn should be sounding at medium volume.
If you do it right, your plane will stall about 6 inches above the pavement, and you will plant yourself firmly on the runway. At this instant, pull your stick all the way back and hold it there. Since the plane is stalled, this prevents the AoA from reducing and the plane from starting to fly again.
If you land using this technique, you will always touch down at minimum airspeed. You won't bounce or porpoise. Most importantly, you will rarely need brakes, and you can usually just coast to a halt.
I strongly suggest you try to avoid using the rudder or differential braking on landing or rollout. This just introduces yaw, which can develop into oscillation, which is the start of a ground loop. Just align the plane with the runway centerline on approach, and keep it there. Absent a crosswind, no rudder should be needed.
What gets people in trouble is landing too fast. You come screaming in and try to plant it 30 mph above stall speed. At this speed, any bounce puts you back in the air. If you do put it on the pavement, you have to stand on the brakes to keep from shooting off the other end of the runway. During this whole process, any yaw becomes oscillation, leading to a ground loop. Things are just happening too fast. Just follow this rule: Never try to touch the pavement unless the stall horn is sounding.
As for carrier landings, well I've never done a real one, but I did my first simulated one today in 1.05 and the above technique works like a charm. Just get a good stabilized approach and control your airspeed precisely. Use "Pitch for airspeed, power for altitude" to control your descent path to put you on the arresting wires area at just above stall speed. Touch down firmly, and either hook or go around. Don't try to salvage a bad carrier approach. One bounce, if you don't hook, then apply power smoothly and go around. Ground loops and brakes aren't an issue, by the time that stuff happens you've missed the wires. Again, the secret is speed control; too much and you're gonna bounce and miss the wires.
