it's an economy car designed 20 years ago. You can't get rid of the wind noise.

About the hatch leak.. If it's dripping from the hatch struts, it's coming in through cracked seam sealer at the upper hatch area, or the rear washer nozzle, or your sunroof drains are clogged. If it's pooling in the spare tire area, it's your taillight gaskets.