was done in batches of 20, with no pair of injected objects permitted to be closer than 150 pixels. To ensure enough objects were injected at small radii, positions were chosen in radial coordinates for the cluster fields. The simulated objects were single Sérsic profiles generated using <span style="font-variant:small-caps;">GALFIT</span> with the following parameters: Sérsic index $n = 1$, circularized effective radius $1.5 \leq R_{e,c} < 10~\mathrm{kpc}$, central surface brightness $17 < \mu_0 < 29 ~ \mathrm{mag}~\mathrm{arcsec}^{-2}$, axis ratio $0.3 \leq
b/a < 1.0$, and position angle $0 \leq \theta < 360$. Sets of parameters that resulted in objects much too bright to be a UDG ($\langle\mu\rangle_{e,\mathrm{abs},F814W} <
23.5~\mathrm{mag}~\mathrm{arcsec}^{-2}$) or far too faint to be reliably detected ($m_{F814W} > 28.5$ or $\langle\mu\rangle_{e,F814W} >
29.5~\mathrm{mag}~\mathrm{arcsec}^{-2}$) were thrown out and redrawn. The simulated images were then analyzed with the same pipeline described above, with the exception that only the nearest detected object within 5 pixels of an injected location was selected for <span style="font-variant:small-caps;">GALFIT</span> fitting. Roughly 97% of recovered objects have a Sérsic index $n < 4$. Figure \[fig:completeness\] shows the recovery fraction as a function of effective radius and magnitude. We find a 50% completeness limit of $\langle\mu\rangle_{e,F814W} = 26.9~\mathrm{mag}~\mathrm{arcsec}^{-2}$ with no 