I don't know where in MI you are but we are fortunate enough to be allowed to have TP in our ponds. I would seek some out, they are a cool species to watch and they give back to the pond in return.
Canyon-
I would love to be able to trial some TP on my FA here in Iowa. Unfortunately, our DNR says its a no go. I even tried to get one of the universities to begin some research on TP for FA control in northern ponds, but again found no takers. The Iowa DNR seems extremely leery of unleashing a (potentially) invasive species. So, as long as my back will take it, I'll keep on raking, with a little cutrine spot treatment here and there, and some pond dye for good measure..
