I just ordered a bolt of 108" wide tulle to use on my cucumber trellis this year. I'm going to install some PVC arches over the trellis in an attempt to hold the fabric a bit away from the vines... the one annoyance last year was that the little tendrils kept hooking themselves into the tulle, so every time I lifted it to pick cucumbers I had to tear the vines away from the fabric. I have some clamps (from Greenhouse Megastore) to use on the top of the arches, maybe a few more clamps on the ends, and I'll use ties or velcro strips as needed elsewhere.
I got a good price at a place called Fuzzy Fabrics, but the only available colors were white, ivory, or black -- I went with ivory. I haven't ordered from them before. They claim it's been shipped, so I should be able to update about them soon! They had a 50 yard bolt for a few dollars more (including shipping) than a 25 yard bolt on Amazon (shipping included). That should keep my cukes covered for years!!