Jump up the center column, and capture the stoners. This will encourage the Bubble Busters to jump up, allowing you to capture them without issue.
Bounce along the lightning bubbles that float along the side, while facing the outside wall. When they are aligned with the enemies, release the jump button to pop the balloons.
There are seven hullaballoons in a row, near the top.
Let the fire bubbles work their way down to the level where the enemies spawn - this will make surviving this level a lot easier.
If you have rapid bubbles, make a stand in the lower left to try and get some 3x comboes, keeping in mind that they break free of bubbles pretty fast in this level. Otherwise, work your way to the upper left corner after the enemies fall down.
Thin out the enemies from the start position until they stop coming down by you. Next, fall to the top of the screen and do the same. Finally, you should be able to eliminate the enemies bouncing in the center with little resistance.