I am very familiar with this problem. The additional boosters are not placed where they are needed. You can only go up or to the side. But it won't give you any additional help. I'm sorry. But it is the same with every character.
This would only work if remaining blockers are too weak. For this layout I swiped the rainbow candy UPWARDS so that I could get a color bomb or coloring candy to blow up everything.
... If it weren't ruined by a new striped candy from above.