In 360° video they published this week (check below) the daggerboard is blured, but in shots above clearly visible though, it might be from another session I guess...
The Japanase funded team have a good base of sailors already, but having Barker with such experience and Draper also onboard, I would put the British former 49er sailor at the helm with the New Zealander watching over him , to match the Outteridge-Percy and Burling-Ashby proven 'duettos'.
Check an excellent informative article from Soft Bank Team Japan at their official web softbank-team-japan.americascup.com - Some excerpts below.
Technical Director, Nick Holroyd:
“First, there’s a lot of work to assess the package we’ve got”, “Fortunately, the design space is narrowed down – appendages, control systems, wing control, ergonomics, how to deal with the shortage of power on the boat in terms of hydraulic power from the boys grinding – those are all areas teams know they really need to focus on at this point.”
...Specifically, dagger board foil design will take the priority seat in the development phase as the team narrows down which shapes will go into production for their future AC50.