  We study the dynamics of supertubes in smooth bubbling geometries with three
charges and three dipole charges that can describe black holes, black rings and
their microstates. We find the supertube Hamiltonian in these backgrounds and
show that there exist metastable supertube configurations, that can decay into
supersymmetric and non-supersymmetric ones via brane-flux annihilation. We also
find stable non-supersymmetric configurations. Both the metastable and the
stable non-supersymmetric configuration are expected to describe microstate
geometries for non-extremal black holes, and we discuss the implication of
their existence for the fuzzball proposal.
