BC23 asymmetric sail area

[Johnd]

Hoping someone can offer some advice on flying spinnakers on a BC23.  In some photos it is being flown from stem-head and in others from a pole. Can someone advise on what the Sq m area is and if there are two sizes depending on how it will be tacked down?

[MarkDarley]

As I am about to take delivery of a BC23, I will be interested to see answers.  Has anyone discussed this with Matt?