I've seen a number of people squeaking about the f4u being hard to take off from a carrier. It's really quite easy once you get some practice.
The F6F willl take off with a couple of notches of flaps, and wep.
The F4U-1C/D are a bit more tricky. To take off in them, do the following:
1. Turn off autotakeoff(You can do this as you're sitting on the deck)
2. Go to full throttle
3. Turn on wep immediatly
4. Once your plane begins to roll, start dropping flaps untill they're all the way down.
5. Raise your geat the moment your plane leaves the deck.
6. Now you're flying a brick. Don't try and climb or turn. Try and hold the plane level, dont be afraid to lose a bit of alt, just keep the plane level for a moment.
7. After you're flying level, you can start to raise your flaps slowly, and pick up more speed.
Following these steps, you can take off a fully loaded f4u-1d with 100% fuel, 2000lb bombs, and rockets.