Do you have co2 around? If so I cut a small opening pour out ky hops needed. Fill the bag with co2 shaking it while I do so to get all air out and than quickly seal it with an iron. I tried using co2 purged zip locks in freezer but they went bad. Mason jars work as well.
This is where a food saver comes in VERY handy. I use mine for sealing unused grains, hops, and pretty much everything else. The bags are freezer safe and have kept my hops in usable condition for over a year.
__________________ He who drinks beer sleeps well. He who sleeps well cannot sin. He who does not sin goes to heaven.