I am a BASC member, which was very important to the FEO in terms of public liability insurance. I have already got my mentor sorted, with a guy I was on the DSC1 with (although years of experience in deer stalking).
Edit: I will say that actually, mentoring does make a lot of sense to me and I have no problems with it. For me, it's the fact that paid and invitational stalking doesn't constitute good reason. That's going to put stalking into a huge decline as land gets sewn up in the dead man's shoes cycle.