When the pollen count is very high and I have no choice but to go out I'll take benadryl, use eye drops and maybe a face mask (like those used in asia). The face masks with filters are good, I bought some cheaply on ebay and they work pretty well as they stop a lot of pollen being breathed in. It depends how comfortable you'd be with wearing them.
Most of the time I take phenylephrine and see how it goes, I take medication and eye drops to school with me anyway.