017: Edit while you shoot.
If you're on one of those crazy ten or twelve-day feature-film shooting schedules, you probably aren't going to have much time for editing during principal photography. As I'm on the every-other-weekend-forever shooting schedule for Interplanetary, I don't have much of an excuse for waiting almost a year to get seriously into editing. Well, I'll count as excuses the day job and all the pre-production that goes on the 26 days a month we're not filming.
So, I guess the real trick would be to have an editor for your movie who isn't involved in day-to-day production. On a low-budget project, this would be difficult, but not impossible.