I just finished reading Linford Fisher's book, The Indian Great Awakening: Religion and the Shaping of Native Cultures in Early America.
Fisher, however, convinced me that the Native American outlook on religion is much different than the way that Europeans view faith-based matters. There seems to be a range of beliefs among various American Indians regarding Christianity--from the wholehearted embrace of Samson Occom to complete rejection. Complicating matters was the fact that the most sincere evangelicals often abused their relationships with Native communities by vying for land and, in the case of Eleazar Wheelock, using money earmarked for Indian missions to train elite white colonists of British origin. While I do not think that Fisher thoroughly analyzed the Native American experience of conversion (in contrast with white colonists at the time of the Great Awakening), he has provided enough data for scholars to rethink Native adoption of Christianity in light of the culture and traditions at that time.