The reason people are having issues with encirclement is the ZOC rules are too strict. Your enemies ZOC blocks supply even if you have a unit there, therefore encircling. This makes encircling way to easy and confusing.
Excerpt from the attached article on ZOC & supply: The game would be better served with a "Suppressive" ZOC IMO
EFFECTS ON SUPPLY LINE AND RETREAT
Interdicting – Prohibits the path of retreat or supply from being traced through an Enemy Controlled hex regardless of the presence of Friendly units.’
Suppressive – Prohibits the path of supply or retreat from being traced through an Enemy controlled hex if the hex is not occupied by Friendly Units.
Permissive – Does not affect the path of supply or retreat in any way.
https://wargamehq.com/mechanics-monday- ... ol-basics/