This works great, is almost invisible and available in many diameters and strengths.
For Example 65# Test is about the same diameter of 10 pound test monofilament. Unbelieveably Strong for its small diameter
They manyfacture up to about 200+# stuff.  I use it for Fishing line. Floats,Synthetic, Braided..  They have a High Vis Yellow( I use for Fishing) which wouldnt be stealthy, but also a dark Green/Black braid which I am using to hold up/hoist my "invisible" antenna.
*********Power Pro line by Spectra. ***********
 I think they may go up to 400# sizes.  Ultra light weight also, 300 Yds of the 65# probably weighs less than two ounces.  Careful though, it will cut you. Abrasive.
Could be very a Useful/ Multipurpose tool  to a Hamoholic.
73, Val  N4RJ