No bad at all. A bit of Rainex will sort out the spray problems.
Looks like a 7.4m sail to me, Loft quote a boom length of 216cm.
The clew is almost in shot, so the mount is at least another 5-10cm beyond that.
Good for light wind blasting, not so for wave sails if you still want the board in the shot (i.e. WA

).
5.0 has a boom around 165-170cm so for the same effect, you would need to put the camera 56-61cm behind the clew!
No duck gybes then I'm guessing