As Jeff said, they stopped making cryo in powder form at least a year ago, for the reason you mentioned...it didn't drop. I've dry hopped many batches with cryo pellets and they act just like T90 pellets. If your system has trouble with T 90, it won't be any different with cryo. Don't fall prey to the use 1/2 as much theory. That's based on IBU and as we know that doesn't matter for dry hopping. I ise cryo in the same amount I'd use T90 for dry hopping. Also lime Jeff said, be aware that it will taste different than using T90 because the vegetal matter is missing and it does have an effect. I've been working on blending cryo with American nobles to create my own lupulin/vegetation ratio. Looks like it's gonna be an interesting investigation.