So, I spent a full day's energy on this, though not entirely optimally. Had a little bit of Dripping with Gore which was blocking me from getting close, and I did kill a serving drone which got some alarm. That's probably not optimal unless you're burning through several days worth of energy at once.
Initial results: 35 fancy clutches, 30 gold necklaces, 32 fresh cred chips, 39 gold cred chips. Did not track polarized shades and downtown visitor IDs.
After using the clutches, totals end up as: 36 gold necklaces, 36 fresh cred chips, 48 gold cred chips.
Results from those…
Gold necklaces: 1654
Fresh cred chips: 1228
Gold cred chips: 5808
For a total of: 8690
Not bad, but less than an average day of ghost ship farming. Just one data point, but it did seem to be a bit high on the gold cred chips, which means it might even skew toward the high end. We'll see what some more attempts can garner in the future, though.