In some cases it is better to start the study of a strongpoint with data from the present time. With the picture below, some info from visits by friends in the 80-ties, combined with war time photos in the sources, we found a possible layout of Ba 29. The battery Adour Süd is a naval coastal battery with 7,5 cm anti aircraft guns in the dual function sea-air, manned by 3./M.A.A. 286. The guns were placed on 6 x bunkertype Fl 243, four of them are still present. Starting at the left bottom on Google, numbers 1, 2, 4 and 6.
The extreme rare hospital M 159 more inland is an excellent bonus on your visit.
The Google Earth picture of the battery in 2008.