What`s the headangle on the Mankind? A lot of newer type freestyle frames with a 20.8 toptube ride more like a 20.5 because of the steeper headangle.Also is the Hoffman actually that long? Maybe one of our resident Hoffman experts can confirm?
20.5=pro
21 pro xl
21.25+pro xxl
Sizes vary between diff manufacturers but this is pretty close...
James