slats11, perhaps mm43 has the data, but I have not seen it. The data being:
a.) the daily boundaries of the aerial search grids flown after June 7.
b.) the day, time, and location of wreckage and/or bodies as initially spotted daily in the searches flown in a.).
c.) the correlation between b.) and the day, time, and location of the retrieval of the spotted wreckage and bodies by surface vessels.
c.) ought give you some approximation of the current and windage at least during the period between events b and c.
takata was hypothesizing early on that the flight deviated right, and possibly had reversed course and was headed toward St. Peter and St. Paul when it crashed.
There are a lot of variables that might explain the Brazilian military failing to spot bodies or much of the floating wreckage in the search grids that were flown June 2-5, but it would be a pretty incompetent search if something as large as the VS was missed in the area searched on those days.