I have found for most groundwork that (can’t believe im typing this) Wal-Mart in the boating section has some very good Nylon Rope 300ish pulling strenght nice and soft and if you dye it it becomes even more supple. Its $12 a 100ft and they have some good wieght rated hardware. Just if using a dye use white vinegar and not salt and you have to use a high temp soak bath. Plus the marine grade is great for any Wet applications as its resistant to mold and mildew. Just my 2 cents. And for natural fibers “Twisted Monk” has some good prices.