Steve is a beast with a tug toy in flyball. I've yet to come up with the perfect match in design. He's not picky, but the Four-strand round braid ones stretch out really quickly, no matter how tightly they seem to be braided. The square braid ones don't stretch, but they hurt my hands. I'm not wild about the plastic handles, but maybe that's something I should look into? I make them myself, but I'm not that creative when it comes to design. Anybody done anything or seen anything that's worked well for them?