Rob, use care when selecting a rigger or DIY. i had a harken unit 0-MKIII put on my catalina 27 a couple yrs. ago. unfortunately we don't use the boat near enough and part of the reason is the battle we have w/the furler. just today i met with a new rigger and found that the top swivel is too far down the foil and the halyard wraps-not everytime-only when the wind freshens and you need it the most. also the lead angle from the deck to the drum is not 90deg. and the drum loads all at the top-no riding turns but a mess just waiting to happen. on the rare occassion when the stars are in perfect alignment, the unit works great. i'm satisfied with the quality of the equiptment-harken is good stuff, but it only works as well as the guy who set it up. close doesn't count on this job-best wishes.