In a breeze the 4 part can be pretty tough for me to get all the way in, while a 6:1 would be easier it would still be pretty hard for my other half to manage. We looked at a 6:1 only but when I ran the numbers the 4:1/16:1 arrangement uses a little less line than a 6:1 would for our boat and breaks it up into two more managable chunks. We made the fine tune line smaller and a different color to help with quick identification.(Red 3/8" vs White 1/2" Sta Set) With this set up we can both sheet the main all the way in with no problems so far. Our take on it was that this system gave us all the adjustment we needed with less line in the cockpit than a 6:1 by itself. I can send you a drawing and a spec sheet of the parts, line and quantities I purchased for mine if that would help. Let me know what you decide.