I think I joined PAMPA just in time to miss that issue, so I don't know if my way is any better, or if it isn't just the same thing, only different enough to not work with solid lines:
I use a board that has a pair of 6" sections of 4" PVC drain pipe epoxied on to it. The sections are spaced apart such that one wrap around them equals five feet (plus or minus something like 1/16". Being an engineer I spent about half an hour calculating everything, with factors of pi and 1/2, and all sorts of stuff flying around. Then I marked my board, carefully set my posts, measured it just to make sure, then adjusted things to match the tape measure instead of the obviously wrong calculations).
There's a headless nail (actually a sharpened bit of music wire) driven into the board half way between the posts.
I put an end on a line, put it on the peg, wrap around the posts 12 times, then put an end on the line while the end is hooked onto the post (that's a bit of a trick, but it works.
Then I do it again, only I go the other direction (this is to make unwrapping easier).
As long as you wrap the line neatly around the posts with no overlap, you get lines that match up to a hair. As long as you wind the second line in the opposite direction, you can take the two middle ends off of the peg, put the last one back on, then wind the lines neatly on a reel. All of this in the comfort of your own shop, instead of out in your gravel driveway, grinding your lines into the dirt and goodness knows what into your lines.
Oh -- and don't lose count. I don't have to imagine the frustration of making up a line set with one 60' and one 55'. For the second time. In a row. If you count carefully, you can imagine it and never have to live it.