The latitude/longitude units can usually be changed in the general settings of the GPS. In the general settings, look for the format for decimal degrees (DDD.DDDDD). If this is not an option, record the latitudes/longitudes in the format provided and convert to decimal degrees at a later time. Here is a suggested online tool to convert between units: https://www.fcc.gov/media/radio/dms-decimal
Taking photos of the entire site from the beginning and end points during each survey is a good way to visually capture changes in shoreline topography and other characteristics that may affect debris deposition. In addition, please take photos of interesting, unidentifiable, or fouled debris (organisms growing on or attached to debris). Make sure to upload survey photos to the database along with the corresponding survey data.
Surveys must be conducted on a regular, every 28-day schedule. If you need to miss a survey, it should be made up within a three-day window of the original survey date (i.e., 28 days ± 3 days). That gives you a seven-day window for completing the missed survey.