[Bruman]

Your best pet honestly, is probably to plant yourself at the fear gate and wait for incoming raids, then ask someone who the raid leader is and ask them. You're unlikely to get anyone to write down your name and think "Oh yeah, I need to ask Bushido before going on this raid!"

But if you're there and in person, most raids don't mind someone tagging along for rots, as long as you don't break mez or ruin the break-in ;-)