I tear an old T-shirt into strips and, using a bowline knot that doesn't slip, tie that around the plant. I tie the other end of the strip up to where I want it to run. That can be beans, cucumbers, roses, or tomatoes. Or if appropriate I tie both ends to whatever and sort of trap the plant in there. I don't like to use string, worried that it might cut the plant, especially in the wind. I have a lot less to tie up than you do though.
I like that idea, especially since I have a pile of old t-shirts that I use as rags.

I won't need the strips to get beans started, except maybe yardlongs. But I weave tomatoes into a string trellis, and those ties would come in handy for holding the stems in place until they set.
My own small bean crop (started from transplants) consists of:
Aeron Purple Star runners
Hopi Pole limas
Fortex (snap)
Serbian Pole (shelly beans)
Soissons Vert (shelly/dry)
Chinese Red Noodle yardlong
An heirloom red-seeded Chinese yardlong (which I named Chinese Long Green)
All of those are pole. Yesterday was dry enough to put up some trellises for the runners (which already were about 3' long) and the Serbian; then
buckets of rain (two separate storms!) put a stop to any further garden work for the week. The poles are up for Soissons Vert, hopefully it will dry out enough over the weekend to put up strings Monday or Tuesday, when the next storms are expected. Still have about another 100' of trellis to put up too, and need to lay mulch for weed suppression... not that it's needed for moisture retention.
One set of bean transplants remains, some nunas that I will be experimenting with. Those will be going into large plastic drums repurposed as pots, so that they can be moved into the greenhouse (or indoors under lights) if necessary to get seed. The problem is, I need a large volume of friable soil to fill the barrels (from a local landscape supply) and their soil has yet to dry out enough to shovel! Supposedly the beans are bush, but the seedlings have sent up short twining runners, so I guess time will tell.
I started 5 of the oldest soybeans as transplants too, and got pretty good results - about 30 plants each. Only two of those (Fledderjohn and Sakamotowase) are edamame, the rest are non-GM grain types.