I have an old Hood 810 line drive furling unit which I'd like to upgrade to a new single line unit (Profurl C290?). I am by myself and would rather not climg the mast, so is it possible to remove and replace the foils (and head swivel) by just disconnecting the headstay from the deck without climbing? How difficult is this or should I have a professional install it for me? I'm pretty handy when it comes to mechanical things but hate climbing (especially without help!). thanks!