Works great, costs a bunch.
David: I bought the asymetrical spinnaker for my 310 when I first bought the boat. You need the following - spinnaker, sheets, dousing sock (I bought ATM and the tacker), padeyes (installed aft of primary winches), and turning blocks. Only the dousing sock is optional, but, really necessary if you want to encourage use of the spinnaker. It does work great, but quite honestly, I have not used it often enough on Lake Erie to make it worth the expense. If I had it to do over, I would go with Ron's suggestion of the whisker pole for my 150 genoa. Relative cost about $700 vs $2000. However, the spinnaker is beautiful and it is a real rush when she goes up and fills. Wow is the operative word. I just don't get too many wows. Another issue is that the spinnaker in the sock is 40 ft long and occupies most of the front half of the port cockpit locker. Removing the spinnaker from the locker and taking it throough the boat and out of the forward hatch is a scene from a Chinese parade.