  In Papers II and III we show that Transient Lunar Phenomena (TLPs) are likely
related to lunar outgassing, albeit in ways not fully understood. Here we
propose a path forward, in which current and forthcoming technologies provide a
more controlled, sensitive probe of lunar outgassing. Many of these techniques
are being realized for the first time. Given the optical transient/outgassing
connection, progress can be made by remote sensing, and we suggest programs of
imaging, spectroscopy and combinations thereof. However, as found in Paper II,
many aspects of lunar outgassing seem covert in nature. TLPs betray outgassing,
but not all outgassing produces TLPs. Some outgassing may never appear at the
surface, but remain trapped in the regolith. We also suggest more intrusive
techniques, from radar mapping to in-situ probes. Understanding these volatiles
seems promising in terms of a resource for humans on the Moon and beyond, and
offers an interesting scientific goal in its own right. Hence this paper is a
series of proposed techniques, some in practice, some which might be soon, and
some requiring significant future investment, some of which may prove unwise
pending results from predecessor investigations. These point towards
enhancement of our knowledge of lunar outgassing, its relation to other lunar
processes, and an increase in our understanding of how volatiles are involved
in the evolution of the Moon. We emphasize certain ground-based observations in
time for flights of SELENE, LRO and other robotic missions, and others before
extensive human xploration. We discuss how study of the pristine lunar
atmosphere pertains to understanding the role of anthropogenic volatiles, an
important confusing signal
