I was reading somewhere... forgot where, in early war years (which would have covered Midway) land based AC would be parked with the flaps down, in the case of the SBD the upper dive brakes would be closed, the lower flap would be lowered. I forget the reasoning behind them doing this but it was discontinued around midwar. I think it was on an SBD buildup page from AM or someone.
I built my most recent SBD like that and it was rather pleasing... you coud see the detail of the actuators and the nice red of the inner flaps even without handling the model, but the scene was more realistic if you were planning to put it in a dio or such.
I also closed the canopy and had no ordnance on the mounts (model contests be damned!) as parked on the tarmac that would be more what you would expect unless it was returning from or being readied for a mission.
(secretly I like the brakes and flaps wide open as well and my first two were done like that)