Hello:
*bows deeply*
As this is a Kung Fu forum, this may not be lost on members
I feel to claim JKD (despite BL saying forget the name and set curriculum) there has to be a lineage traceable back to BL.
Many of the JKD instructors can trace their lineage back to BL via Dan Inosanto or his students e.g. Paul Vunak, Cass Magda, Chris Kent, Jerry Poteet, Larry Hartsell, etc.
Otherwise, why even call it JKD?
Can you use the JKD Philosophy? I think so. MMA is IMO JKD Philosophy in action.
~sg