Recovered bubble maps corresponding to different galaxy number densities n_gal≈0.0040−0.0005/cMpc³ at $\overline{x}=0.7$. To achieve these number densities we vary M_{UV, limit} in our z = 8 simulations, and assume flux limit corresponding to a 5σ EW limit of 30 Å for the faintest galaxies. Dots show the detectable galaxies, color-coded by their true Lyα transmissions. As number density of galaxies increases, bubble recovery improves. With n_gal≳0.002/cMpc³ we can recover bubbles well: lower n_gal is not sufficient to sample the space.