I bought the 5 Gal Bubble Bags off EBay a while back. Great price by the way. They work great. I place my trim in a 5 gal bucket with ice and stir with a paint mixer attached to a drill. I then pour the contents into another 5 gal bucket with the bubble bags. I ran the same trim 4 times this way and got hash each time. I highly recommend the Bubble bags and running your trim several times thru the process to get the most hash.
Peace Brothers