Please see the updated guide for information on the changes that came with the January 2020 Update.
UPDATE: Here is a wonderful tool by CMDR VicTic that will help you locate overlapping Painite hotspots
In this tutorial, we look at the most efficient method of earning credits mining Painite, in overlapping hotspots, found using Detailed Surface Scanner probes.
Double Hotspot Site
HYADES SECTOR DB-X D1-112 – Body 2
Special Thanks to the original method for this by Reddit user /u/ambassador_spock