You can't because your coins aren't "available." I've only used coinbase once and haven't done more than buy btc, but it did take several days for the coins to

You can't because your coins aren't "available." I've only used coinbase once and haven't done more than buy btc, but it did take several days for the coins to become available (presumably for bank transfer to clear), during which time the price dropped by about $100/btc. I'm not mad about this- it was clear at time of purchase that I'd have to wait for transaction to clear, but >3 days would have upset me.