You know, in the past that when the hops I wanted weren't available, I took my bad luck as an opportunity to try out different hop varieties. A few years back during the hop crisis (was it 2008?), there wasn't as much demand for Nelson Sauvin, and I was pretty happy with the beers it made. Two years ago, I wasn't able to get any Simcoe, so I bought a pound of Apollo and was surprised by how bold and interesting the flavor and aroma was (I still consider it to be the #1 most underrated hop). So I say, try out some varieties you aren't familiar with. I know that, despite the "onion/garlic" thing many people get from Summit, I love that hop, and it is usually pretty readily available. And for every wonderful Simcoe/Amarillo IPA out there, there are plenty of delicious Summit/Apollo beers waiting to be brewed.