The F4U-1, F3A-1, and FG-1 pilots manual AN-01-45HA-1 dated 1 March 1944 describes full flap use in the F4U for short distance take off, also there is an exerpt that I will quote:
"FLAP SETTINGS- For normal operation it is recommended that a setting of 20 deg be used for take-off. Actually, any setting from 20deg to 50deg ("FULL DOWN") may be used, the higher settings giving shorter ground distance. Take-offs with flaps up are easily accomplished with a small increase in run, dispensing with the inconvenience of retracting the flaps after take-off. In addition, the rate of climb immediately after take-off with flaps deflected is inferior to that with flaps "UP". Take-offs at high flap settings and at full flap should be made only when it is necessary to obtain the shortest possible ground run, and after more experience with settings increased gradually from the recommended setting of 20 deg. When a high flap setting is used, the elevator tab should be slightly more tail heavy (about 1 deg).
NOTE
It has been found with the flaps down, the tail cannot be held on the ground with the stick full back, at manifold pressures greater than 44 inches Hg. Also, when operating a wooden platform, the wheels will start slipping on the deck at about the same manifold pressure. As a result, when making carrier take off it is necessary to advance the throttle through the final portion of its travel as the airplane starts to roll. No difficulty should be encountered in this operation.
(11) Open the throttle gradually and smoothly.
CAUTION
Do not retract the flaps too soon or too rapidly if the speed is very low; otherwise the airplane may settle due to the loss in lift. It should be remembered that the higher the control speed, the better the control. "
Regards,
Malta