take a stab at it
Do you mean a downhaul for the spinaker pole? I have a regular racing spinaker and not an assymetrical one. If I can remember an assymetrical one is a crusing one that does not require a pole? You might be able to do like I have for my pole downhaul. There is a block mounted on a base just screwed into the deck. Mine is about 2 feet behind the anchor well. Not a great answer for you but the best I can think of.
