  We have imaged lithium-6 thousands of times in an optical tweezer using
$\Lambda$-enhanced gray molasses cooling light. Despite being the lightest
alkali, with a recoil temperature of 3.5 $\mu$K, we achieve an imaging survival
of 0.99950(2), which sets the new benchmark for low-loss imaging of neutral
atoms in optical tweezers. Lithium is loaded directly from a MOT into a tweezer
with an enhanced loading rate of 0.7. We cool the atom to 70 $\mu$K and present
a new cooling model that accurately predicts steady-state temperature and
scattering rate in the tweezer. These results pave the way for ground state
preparation of lithium en route to the assembly of the LiCs molecule in its
ground state.
