PTP-
I will try to explain the down haul--as my camera and computer don't like each other right now so I can't take a photo.
The down haul line coming from the bottom of the mast comes up through the block and has a hook on the end to hook into the tab at the bottom of the mast--where you have the short piece of blue spectra tied. On the top of the block we put a hook to hook into the grommet in the sail---where you have the block tied onto the sail.
So when sent up the down haul comes up one side of the boom, the hook on the block hooks into the grommet of the sail and the down haul line comes down the opposite side of the boom and hooks into the tongue at the bottom of mast.
Hope that makes sense??!! I like Wouter's idea of posting ideas on the F16 site---but our photos will have to wait. <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />