Upgrading
I did the conversion about 6 months ago. The single line system works well. Furling is easy rather than the struggle it was getting to be. I find the drum is just large enough to furl our original 110 jib, if I had a bigger sail I'd have to use a thinner line. I never like the continuous line system, and when the bearings started to go, opted for the single line replacement (you'll need the 810, I think). If you want to DIY, most people have found it to be a relatively straightforwad. Basically, you drop the jib (check the halyard swivle which connects to the top of the jib, mine starting to bind so I had Hood rebuild it for another $150), and use the halyard to support the mast because you will be undoing the forestay. I connected the halyard to the anchor roller base. After you unlock the furler (see the instruction manual on how to do this) from the extrusion tube (the aluminum tube the sail slides into), you'll need to get the forestay halyard tight to get the tension off the forestay. You then slide the furler up the forestay, undo the forestay, slide the old furler off and slide the new one one and put it back together. . Make sure you get the installation manual from Hood when you buy. Mine did not come with one so I tried to figure it out myself, which complicated things greatly. I had a big problem because my extrusion tube was about an inch to long so I decided to cut it down an inch. In the process the forestay got jammed in the tube, and while drilling out the tube rivets, we nicked the forestay and had to get a new stud put on, which took a month cuz all the riggers were busy after a recent hurricane. I won't go into all the fun details, but it was one of those jobs where everything that could go wrong did and you chock up to a "learning experience." But really most folks don't find it to be a big problem and the replacement works nicely. Its by far the most cost effective way to upgrade to a single line system.