I alternate between serious thud and serious sting on Nina’s front. We start out with the galley whip pretty aggressively, then introduce a difficult-to-describe toy I’ve never seen anywhere else; basically it’s a flexible weighted cable about a food or so long on the end of a stick. It leaves marks sort of like a cane, provides a very *focused* sort of thud. I got back and forth between using both of them pretty meanly, with Nina asking for the other whenever they've had too much of one.