  We calculate the pair susceptibility of an attractive spin-polarized Fermi
gas in the normal phase, as a function of the pair momentum. Close to
unitarity, we find a strong enhancement of Fulde-Ferrell-Larkin-Ovchinnikov
(FFLO) pairing fluctuations over an extended region of the
temperature-polarization phase diagram, which manifests itself as a pronounced
peak in the pair-momentum distribution at a finite pair momentum. This peak
should be amenable to experimental observation at achievable temperatures in a
box-like trapping potential, as a fingerprint of FFLO pairing. Our calculations
rest on a self-consistent t-matrix approach which, for the unitary balanced
Fermi gas, has been validated against experimental data for several
thermodynamic quantities.
