  Direct detection is a powerful means of searching for particle physics
evidence of dark matter (DM) heavier than about a GeV with $\mathcal
O(kiloton)$ volume, low-threshold detectors. In many scenarios, some fraction
of the DM may be boosted to large velocities enhancing and generally modifying
possible detection signatures. We investigate the scenario where 100% of the DM
is boosted at the Earth due to new attractive long-range forces. This leads to
two main improvements in detection capabilities: 1) the large boost allows for
detectable signatures of DM well below a GeV at large-volume neutrino
detectors, such as DUNE, Super-K, Hyper-K, and JUNO, as possible DM detectors,
and 2) the flux at the Earth's surface is enhanced by a focusing effect. In
addition, the model leads to a significant anisotropy in the signal with the DM
flowing dominantly vertically at the Earth's surface instead of the typical
approximately isotropic DM signal. We develop the theory behind this model and
also calculate realistic constraints using a detailed GENIE simulation of the
signal inside detectors.
