I'm having problems getting WILD working, and was wondering if anyone could tell me what I'm doing wrong.

I can semi-reliably get into a sort of buzzing stage, but after a few minutes it just subsides, and I'm left back at square one. I get the occasional rifle shot sort of sound, which I'm assuming is a hypnogogic (sp?) sound, but I don't get any actual HI.

I don't know what to try next to get any further here. Any suggestions?