I don't know of any "full-time" subs.  

I've had the pleasure of spending time with Erica Sweets who is great at role play/submissive scenarios.  TER ID: 181452

Also Stefanie Newton has a couple of reviews with one on the very submissive side.  Unfortunately I haven't had the chance to see her yet

Have not seen her, but she looks very sexy.

I am a true submissive, if you don't mind a mature lady.  Check out my alternative (BDSM) website listed below, and read my reviews.  In Braintree 6/21-24, Waltham 6/24-28.

Whether you seek a woman that will follow your lead and invite your torment or the soft sensual kitten that begs to be your personal pet..... I offer obedience without hesitation! Let me know your needs, and I will be sure to do my best to accommodate you.