"I don't remember where Robert "hails from", but I'm from South
Florida and have always lived in the southeastern U.S. I've heard
only [N] for morpheme-final /N/ (as in [r\iN]) with the single
exception of "Long Island" (as pronounced by people from that area,
and only those people). Also, I usually say [Nk_h] for /Nk/." IK PEYLOUGH, SOUTH FLORIDA
 
If [N] were a phoneme in English how is it that this sound only occurs before /g/, /k/ or in a final position?
 
Jean-Paul G. POTET, FRANCE