I may be able to get a supply of rope that a local supplier makes. He makes utility rope but he also makes quite a bit of that black cord for lawnmower and snowblower pull starts. I've used some of that for my last couple hammocks and it seems very strong. I would be willing to see what I can get from him if someone can give me an idea of how much would be needed.
I think the last roll I got was 200' for $10. Let me know and I'll drop in and see him.
I do not wish to be disturbed - but I can't help it!