sounds as if you need to change your account to margin, I would of thought you know what that is perhaps you do, but if not it would enable you to trade the same security for 3 round trips (buy/sell 3 times) before you would have to stop for 5 days.
Basic pattern day trader rule summary:
An NASD & SEC rule that applies to anyone who buys and sells a particular security in the same trading day (day trades), and does this four or more times in any five consecutive business day period. A pattern day trader is subject to special rules. The main rule is that in order to engage in pattern day trading you must maintain an equity balance of at least $25,000 in a margin account.
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