I Like Ghosth's suggestion.
+ the satisfaction of landing multiple kills with the D3A every once in a while will surely boost your confidence, especially if they are clean kills. And since it can be taken up from a CV, some travel times are not that long to bomb a couple of GVs and return safely (which will be a hard thing to do... D3A is as attractive as a low bomber approaching a CV target.)
Everything happens twice as fast in such a ride. Your SA must be top notch (thanks to external view) and your altitude very precious. So faster, heavier birds will be a piece of cake if you can master one of the slowest planes in the game. A6M2, SBD, Hurri1, 109E, SpitI all fall into that category IMO. Its good for
patience, raw practice, humility, and perks
Actually... that makes me want to try it again
Although this tread is about avoiding the HO in order to become a better stick, relieving your plane of ammo is as much a drastic measure as flying hardcore Late Arena planes like the D3A.