I LOVE BUBBLE BAGS!
The difference between iso-hash and bubble is like stale wonderbread vs. that crusty loaf of sourdough they are taking out of the oven at the bakery as you watch... mmm... the pure flavors of the herb come through in bubble hash, whereas iso hash often tastes like POND WATER because of all the co-extracted chlorophyll.
Enough dry trim to half-fill a 5 gallon pail will give you enough hash to pay for the bags in a SINGLE run!
Search 'stinky bubbles' for a photo log of me making bubble. It's yummy.