Vance,
I live in Baltimore, MD. I go to powwows in MD, VA, PA mostly, and thats cause my car won't go much farther. At some of the small powwows, real and twinkie, I occassionally see the turban.
Also, I have heard Saponi (which up here most say is just another name for Lumbee) and Catawba make Blackfoot references. These language similarites may or may not have been in the past considering the Saponi do not have a language and have not for many hundreds of years. I think their official name is Haliwa-Saponi. Like the Lumbee they have not followed any type of Native traditions for a long, long time. Most are southern baptists. I have a lot of exposure to them since the main Indian population in Baltimore is Lumbee and Saponi.
I know the site you talk about and there is not much anyone can say to make me think that any of these people are Blackfoot, ton names or otherwise. Quite mixed over centuries with Black people yes, not Blackfoot. And the same for Catawba.
Joseph