Pete....My understanding is you are allowed 3 roundtrip daytrades in any 5 day period. Anymore you're classified as a pattern daytrader.
Anything held overnite is not a daytrade so doe'snt count,..do as many as you want.
Take a look at EXDS 24/9---25/9 shows that to do it that way it may pay to be on the ball at 8am