Bubble it up???
Im gonna go out on a limb here and say itll either end up the same or slightly worse. Its probably good as is man. For bubble, do you mean hash that bubbles when smoked? For that, your gonna want to use actual buds and sugar leaves. Like you said, finger hash usually has too many impurities such as hairs and leaf matter that will not be desirable for bubble hash. Just find a technique that works for you. I personally like iso hash. Its very begginer friendly. But with everything new you must do research!!!!
Theres way too many ways to skin this horse bro!!