Surprisingly good session in very lttle wind. Used the AHD 'door' with 44 Iwi fin and it went in very little wind. Haven't used the 'door' in the estuary before as, in the day,  it usually had a 9.8m sail and a 70cm fin and wouldn't clear the estuary bottom. It works ok with the much smaller 44cm Iwi fin. The Foil would have been good today also.