"In the pic, is the pennant the tack of the spinnaker or is it set up for a gennoa?
The pennant line that comes from the becket of the block, the lifeline material, is the tack like for the genoa. It allows the foot of the genoa to clear the bow pulpit as was designed by the sailmaker. It was shortened when the block was placed there. It terminates in a swivel snap shackle just like the Genoa halyard.
Where does the line coming off the block go to?
The line leading aft goes along the inside of the bulwark behind the stanchions and thru fairleads between the stanchions. It is ru much the same way that a roller furling drum line would be run. It goes clear to the cockpit allowing that tack to be adjusted so the tack of the asym chute can be raised and lowered to match the clew height as you come onto or fall off of the wind. It is situated so that it can be used on the secondary (staysail sheet) winch.
If the spinnaker tack is aft of the forestay, wouldn't that interfere with the spinnaker operation?
No. And furthermore the pic show the tack line in its stowed position inside the pullpit when in use the line to the asym chut is run underneath the pulpit and is then forward of it when attached to the asym chute.
I probably don't understand the pic....
Hopefully that has changed...
~Cars