Knights have excellent cv defense. Friday morning was the second time that I had the pleasure to fly fleet-defense with other knights. CV82 was attacking a bishop base when all of a sudden the radar map lights up with red dots converging on the task force.
I launched an F4U4, 50% fuel from the CV to intercept the bogeys. Before I reached 15k, at least 5 bishop aircraft had attempted to divebomb the carrier. But the CV was still floating.
It was a massive on-going battle, and I had to land to rearm/refuel at least 4 times. Heres two of the hairiest moments I had:
Was chasing a much higher BF-110. He starts his dive directly above me. I roll my F4U4 inverted and aim at the CV. I had to have been in this guys gunsights, but over shoots me. My airspeed indicator is at 550 and climbing. The 110 appears in my sights for the briefest of moments and I open up with six 50cal machine guns. His tail section breaks off and he falls into the sea. He did not manage to drop his bombs and we were below 3k when I killed him.
I was at 15k when someone reports a low b26 formation heading for the CV. I enter into a steep dive and am already compressing when I spot the B26. He is already passing by the escort ships and is about 4 seconds away from dropping bombs. I do my best to point my nose at him, and at about 575mph, I fire and hit his right wing root. His plane falls sideways into the sea. The CV is saved

So in the end, I managed to get about 10 kills, 5 other knights were patrolling the skies, and we managed to capture the enemy field. WTG KNIGHTS!
Knights seem to always have volunteers who will either man the AA guns or climb to intercept very high aircraft. This was lacking when I was a bishop.