Inventory is low right now. No doubt about that. As far as pocket listings, I never have them. Once I have a listing it goes on MLS, Trulia, zillow, my website, etc ASAP.
If you have a buyers agent then make sure they have an automated search set up for you. In fmls make sure the settings are for asap and not daily. That way you get the listing right away instead of the next morning.
When you see one like act fast!