I might try the upside down thing. I just grab them by the tail and bend them into a circle and with the same hand hold their jaws open by squeezing on the sides of their head. They can't move, the mouth is held open.......unhook, toss back. They are very easy to control as they are not slippery. Have to pay attention, though. If you grab the head first, the tail is headed your way.....If you grab the tail first, around comes the head, mouth agape. Takes a bit of practice, but not a lot.