Certain tactics do fall out of theory. Absent GPS tracks, we're necessarily only concerned with total effort in a search segment, and must assume that effort is spread out, or at worst scattered randomly. But in repeated searches through a wilderness area, teams will wear down paths, which will attract following teams, potentially leading 3 teams to follow nearly identical paths -- highly suboptimal. So a simple tactic is to send subsequent teams in at right angles or at least substantial angles relative to each other.

A very interesting area I wish I time to think about is treating the team as a single sensor. I think that approach more closely matches wilderness SAR practice.

A: Yes, if they maintain good spacing, then ideally we should use the math for proper parallel tracks (or just measure them as a ganged sensor platform to begin with). Washburn and others cover that too.