Where should i bonesmash for the best bone formation

[unknownlooksmaxer]

Im bonesmashing now. Im on test and when i bonesmash the bones grow incredibly quickly.
I want to ensure i am hitting the right spots for the best looking face i can get.
Whats the best bonesmashing massage gun. Currently i an using a blunt football trophy which does the trick but need something that i can grt much more hits dhring my bs sessikn