Garage sale/swap meet type flea markets, where are the best?

I am looking for the flea markets (or swaps) where people set up tables and tarps and put their stuff out in totes or just throw heaps of it on the tables or the ground.

These vendors seem to have the best prices rather than those who are set up year round in a booth inside.

Looking for clothing mainly, but I tend to dig through anything. I love finding those people who just bought a storage unit to flip, or maybe they just cleaned out a house. The things you can find never cease to amaze.

Any information on fleas or swaps like this would be greatly appreciated.

Thanks in advance for your time.