I learned that it is very hard to removed twists from a line but just running it out. When removing kinks from the anchor lines of our race course bouy I throw the lines in the water and then bundle them up nicely. This seems more effective then running them out.

I personally found 4 mm dyneema (with the other mantle still attached) to be enough for hoisting and retrieving the spi line. I do wear gloves, but these are just plain ones and even then I don't always wear them.

In the distant pasts I also have used 5 mm dyneema on my Prindle 18 with spinnaker and that is about as thick as you want to go. Then I used no gloves at all. 6mm seems excessive to me and I think Andreas only used 6mm dyneema because he strips the mantle off it, leaving about 3.5 to 4 mm of its core.

Note however that if you go for swiftcord or other core less lines that 4 mm may be to little as the line itself may be compressed as there is no core preventing this.

One of the things I liked about 4 mm dyneema is its price. It is so much inexpensive then all the swift cords etc.

If slippery lines are no problem for you (it definately is for me) then I would just go with Andreas suggestion (6mm and strip it all) or the suggestion by PTP (get 4 mm line and only stripped the mantle off the last few feet of the line to the top retrieval patch)

Wouter