The Leading hen works as the boss of a hen group, she will pull hens to her and somewhat aggressively (hopefully with a gobbler in tow). Her body position is made to look like she is "heading" in a direction, tom will get in front of her to keep his harem together. Some will also use her as a breeder staked short (you have the Sub already). I use early season more than anything when I have a "flock" of decoys out.
The Upright will also look somewhat "boss" when next to feeders and in the absence of a Leading hens will still move to her. Body position is more alert not in a bad way, just not as relaxed as the feeding.
So for your use "late" season I would have an Upright, hens at this time are usually alone at end of season if they have already set, single hens are just off the nest to feed, drink and defecate...
You still can use the feeder at this time too, just need to stake her high so her back is just above cover by a few inches. (I use the feather crease at wing line as guide)
Next on the list is a Strutter!! I have had some awesome results with him!!
Here's my early season trio of hens, she is set slightly away from the other hens.
I will also set with my Jake and Strutter during this time too.
MK M GOBL