OK ... I'm a newb but quick learner. I did my first run of bubble last week and have since done about 25 runs.
What Ive noticed so far is; one of the most important is the strain you use.
I started with Violator Kush, the hash was strong but no bubble, it was a dry hashish.
I then tried Greenhouse seeds Lemon Skunk, this was amazing, the plants are greasy anyhow and the hash produced was very sticky,oily and malleable. It was like a ball of chewing gum, It smelt of sweet lemons and melted with even the slightest heat.. Lemon hash? Yes, a first for me.
I'm soon trying exodus cheese hash and G13 hash.
I used the wet ice/ bubble bag method by Matt Rize.