Yes. That's how I do it: Fly in circle, ping the **** out of the map until reapers are too close, then I exit. Now I jump in and scan again, run away, jump in again, run away, etc. Most sectors only have 2 secrets, a few have 3, so especially in the bigger ones, it can be a bit annoying to find the remaining fuel depot wreckage (in pretty much all cases it is 1 planet and 1 fuel depot wreckage. Always scan planets first, then try to find the fuel depot. I found this to be the most effective way).