The USN developed the approach.
Now, before someone jumps up and screams "NO NO NO IT WAS THE ROYAL NAVY!!!"
Please let me remind one and all that every single RN squadron equipped with F4U type aircraft, yes, all, ALL, of them, received their corsairs in the US. The pilots were trained to operate the F4U in the US at USN air stations. They carrier qualified in the F4U aboard USN carriers under USN instruction. The info on which squadron trained where is available if one can bestir oneself to look.
When, long ago, I was conversing with a couple of US naval aviators with F4U experience and, in my youthful (so we're talking some 50-55 years ago) ignorance made mention of the claim of RN development, I was informed by the gents, after stifled scoffing noises, that there was only one way to approach a carrier in an F4U and keep the LSO in sight . . . everyone knew it and no one felt they had to claim it. Keeping the LSO in sight is pretty much a requirement. One US naval aviator of my acquaintance said to the effect that anyone with any experience - he'd been flying fighters since the spring of 1941 and had three combat deployments under his belt before climbing into his first F4U - can figure out the method after the first FCLP; the method was pretty obvious . . . worked for him the very first time going aboard a carrier.
Further, and contrary to the nonsense on the internet, the USN was operating F4Us in combat off carriers BEFORE the RN, period, full stop.