I trimmed trees professionally for 4 years (and it was WAY too much work for me) . . . . .
Boat yards, as written above.
Dacron will out last you (but not your saw, so be careful).
It also coils/uncoils nicely, having little or no "memory."
"Here is your country. Cherish these natural wonders, cherish the natural resources, cherish the history and romance as a sacred heritage, for your children and your children's children. Do not let selfish men or greedy interests skin your country of its beauty, its riches or its romance.” T.R.