Another way of finding a good trading station using the in game tools the your starmap.
Bring up the map and go to the world map control panel dialog box.
Under the star map tab there is a subtab called stars.
Open the statistics folder and select number of pilots currently docked and active.
The map will show bigger spheres for more pilots. The biggest ones almost always correspond to the best trading stations.
While you are there you can experiment with some of the other settings like my available agents, my assets and the ever popular escape pods destroyed in the last hour