dkd,
Thanks for the image. 12:1 certainly would give heaps of downhaul purchase. How much stretch do you get with the 12:1 setup before you have to really fight with the downhaul sheet ? The only problem would be if you turtled the Mozzie and ended up with a mast full of salt water. How does the mast step attach to the base plate ? It certainly looks like a very clean setup.
Is that a mast rotation spanner at the bottom of the mast ?
Do you have any other images you can post with the complete setup ?
Regards,
Peter