I don't imagine he can change his possession target that easily. As for incentive, I think you're approaching this the wrong way. So far, Dyna hasn't particularly gone out of his way to mislead or bamboozle the town. In fact, they've been pretty open. I'm not fond of hunting indies because they're indies, I don't think Dyna should be the lynch today. Fuji or Usopp, I'm fine with either.