Actually, radials required alot more work for the pilot, as in aerobatics the engines being air-cooled, required constant temperature-watching and resultant cowl-flap adjustment...I imagine they eventually got thermostats, like the Mustangs had, to control the constant air altitude change on the engine while in combat. - The Corsair was quickly passed onto the US Marines by their Navy, because of their vicious stall which made carrier operation alot trickier...choosing the Hellcat instead...Many were passed onto the FAA, but Corsairs were a much better land-based fighter and although more powerful than the earlier Seafires, the latter was used more for Carriers. - The RNZAF had 13 Corsair Sqn.'s during the Soloman's conflict, and they were used as land-based fighters. The FAA did continue to use them though, even off light fleet carriers, their pilots were indeed heroic chaps...Land-based Corsairs landed at up to 120 knots, the Carrier guys at 83 knots, five knots short of their very dangerous stall-speed....