One of the nice things about Il-2/Pacific Fighters is that they did actually model the Corsair's brake position as a separate from the actual landing gear. As I recall, the brake position extended the main gear but did NOT lock them in place. It also only extended the main gear and left the tail wheel retracted.
I'd love to see that in Aces High. Since we already have a "Dive Brake" control for other aircraft (Dauntless, Val) apply this to the brake position for the Corsair, as well. It only extends the main gear, and if you try to land on them that way they'll be likely to collapse. If you hit the actual "gear" control, it extends the tail wheel which can rip off under speed.