We outline a model that, based on the diffractive nature of the effective
hadron-nucleon interaction, uses the generalized eikonal approximation to
model final-state interactions (FSIs) in deep-inelastic scattering from a
deuteron target. We concentrate on contributions in the resonance region and
take into account the proton-neutron component of the deuteron.  We compare
calculations for tagged spectator DIS with JLab data at high (Deeps) and low
(Bonus) spectator momenta and discuss the extracted rescattering parameters
from our model. We show how tagged spectator measurements can be used to
perform a model independent extraction of free neutron structure functions.
Next, we discuss the application of the model to inclusive DIS and show
calculations for unpolarized an polarized observables to illustrate the impact
of FSIs.