hey i'm trying to use this same technique. I've set my watch (18 dollars) to hourly chime for about the past three weeks and to a nose plug RC at each one, but I don't think it's beeped in my dreams (if i've worn it at all in them). but who knows? it could work for you. Plus the benefits of well-equipped digital watches (alarm, stopwatch, date, glowing diplay) i have found are well worth the investment