The soft hash is known as bubblehash. You either need bubblebags to do that, or use the ice water hash method to seive the hash.

Someone posted a good way to make bubblehash, but all you have to do is get a large glass jar, get some ice, ice cold water, take the busted up weed, and shake the living hell out of the weed, ice water, inside the jar.

Use an electric mixer to speed up the process.

Let the water set with the green in there, and remove the leaf matter very carefull with a spoon or something. Don't disturb the greyish kif floating in the bottom of the jar. After the leaf matter is removed, you have to siphen the water out, or somehow remove the water without disturbing the kif in the bottom.

That's as far as I can help you as I've only tried it once. Try a search on Bubblehash on this site and something will come up. It's been posted before.

So yeah, crumbly hash, the kind I like to make, is kif collected using the dry sieve method, and is usually blonde in color. It's pressed just using pressure.

Hard, dark colored hash is also usually dry sieved as well, and is made by using pressure and heat.

Soft, formable hash, is bubblehash. Collected using water usually.

Good luck!