Many of the costal socities of the southeastern united states became quite sedentary actually. All while still relying on wild food sources.
Of the Southeast? I thought you were talking about the Northwest. You can't be serious. The Southeast was overwhelmingly farmer-dominated, and there's only one set of mounds known to have been constructed in the area by hunter-gatherers.
We are disagreeing on how much time these things take. The historic accounts, ethnographic accounts, and archaeological evidence points to them having what I would classify as “a lot” of free time. Or at least more than you are assuming.
Curious, because it seems to me all the evidence points in the opposite direction - that hunter-gatherers did not have an overwhelming amount of free time when compared to subsistence farmers.
We know they had time for arts and mound construction.
Okay? So did sedentary farmers?