I use the plastic coated fishing leader from Bass Pro-its the same as what is supplied from the hobby types-actually its made by the same vendor-available in different diameters-the crimp connectors come in the package. Also LHS sells teflon tubing in various diameters that works really well for pull pull-never had a problem and its is really slick-almost no drag on the cables, I run it full length so as not to have a problem if you do have to rethread the cables.

I reworked an arf for a friend that had the short lengths of tubing in fuse and said some really ugly words trying to get that pull pull rethreaded the full length of fuse.