I agree with kingvjack, use some blaze orange on the tree, not yourself. I talked with a guy that hunts public land a lot, he took a piece of cardboard cut into the shape of an arrow, sprayed it blaze orange, and just uses a thumb tack to pin it to the tree. I guess he uses this even for bowhunting just so people know where hes at. Turkeys have great eyesight, check out this article:
http://www.huntingnet.com/articles/article_detail.aspx?articles_id=558