I just bought some mason line like 1000ft(maybe 5k?) for 9 bucks(home depot) and over the winter was just making nets indoors on taped up on the wall, Then I ran out, so I bought a 2 pack of actual trellis netting for like 10 bucks or so(amazon) I think they were like 5x15 or so.. If your going to need a bunch you can buy it in bigger rolls for cheaper. Hammock I feel like would be way too thick.. The trellis nets I got on amazon are the same exact mason line I got pretty much exact width/strand/feel/everything. They also have commercial ones that are made from a plastic which hold up better and are still light weight. Just search trellis nets and if you decide you need a good amount look into the commercial greenhouse/nursery suppliers for bulk options. I believe They're pretty reasonable for the value they provide. Theres also the technique using the nettting in a scrog type canopy set up you can estimate your yields better when using them if you grow the same strains and do multiple harvests because you can extrapolate the grams per 4x4 inch square "column" across the grow area. if you aim to get like one top per square or whatever.
Amazon.com : CastleGreens Trellis Netting, 5x15ft 2-Pack Trellis Net, Heavy-Duty Polyester Trellis Net Design for Climbing Fruits and Vegetables, Hydroponics Grow Net, Garden Twist Tie Included : Garden & Outdoor
www.amazon.com
and the string looked like this just bigger length/roll
Twisted Mason Twine is used to quickly and accurately ensure mason is level. It is rot proof, resists oil, gasoline and most chemicals. For contractor, carpenter, mason or home use. Warning: Do not use
www.homedepot.com
Edit forgot the net did come with that green bread twist tie garden tie pack with the cutter.. and that has actually been very helpful to have out there for random stuff too.... Definitely worth the 12 bucks if thats all you needed.. But I think these 2 packs only barely covered 1.5 plants around and top...
They dont seem to go very far thats for sure... But same token, dont go the tie your own with string route this year... that shit was annoying and took a long time, But I probably saved about a hundred bucks just hanging out inside watching a movie and tying the same knot over and over..