If ChatRoulette taught the internet any lessons at all, it's that heterosexual males will turn anything remotely sexy into a testosterone covered sausage fest (and not the fun kind, I might add). I'd venture a guess that a "breeder" version of Grindr would have similar results - more demand than supply.

Or, alternatively, you could always try CraigsList; however, that sounds a bit like reverting back to the family reunion as a good place to pick up dates. Or trolling trailer parks in an IROC-Z Camaro.