I know exactly what you mean, I don't really like when my big guy nips me either.
I think it scares me a bit more than it hurts, he always pull of ninja styles when he gets me.

When he charges me I'm usually ready, but he's got me a few times, the head butts are painful too sometimes.
My guy has no hump, so it all bone.

The net trick works sometimes but he's smart & will grab it then go for a nip.
My female is pretty bad too, her ninja styles are pretty slick too.
My smallest guy is still shy, after his earthworm treats today he's showing sign of dominance.
Chasing his tank mates all over. I didn't think live treats would give him courage.

His bars are really showing now.
