tyler_hobbyist, I have had male plants with crossed stipules before and females that had parallel stipules as well. Also, the 'myth' about even or offset leaf stems showing the sex of the plant, is wrong. I have had plants (both male and female) that either had offset and aligned leaf stems on the same plant.
The only two certain ways to tell the sex of the plant is either send a sample to a lab and have it tested genetically, or wait until the calyces either pop-out pistils or plump-up into pollen sacks.
But keep looking, You may find something that others have not seen or correlated with the sex of the plant!