Cutting a mesh tarp

If is a side edge that does not need eyelets, try cutting with sharp scissors or hot knife.

To hem it, try hot glue using a roller just behind the still hot glue to force the glue into the mesh.

Thanks Kazza055 one side will need eyelets. Any thoughts on what to do there?

Least expensive way but obviously not as good as sewing, cut it with scissors and edge it with gorilla tape folded over. Get a grommet punch kit from Bunnings for $10-$15 for the metal grommets, they're included in the kit. I've done that with normal tarps and been happy. You'd have to test how well it sticks onto mesh though.

pending on where you are, a sail maker can sew a reinforced webbing all round and place eyelets into the webbing. I mean someone that sews shade sails. They can supply the whole lot and not that expensive.

I make my own shade sails all the time out of shade cloth from Hardware stores, using fishing line, webbing and brass eyelets and 4mm thin rope. It is tedious work but does the job. So I get a couple of half round sewing needles from a saddlery, 1.2 mm gauge fishing line, I usually have a straight edge, to start with, I fold over the edge covering the thin rope, to make it stronger, and sew the edge 3 times over 30mm of width of the shade cloth. When I get to where the eyelet has to go, I sew in the webbing, punch the hole, and fit the brass eyelet. And keep on going. Depending on how big the sail is going to be, minimum, a day's work up to 3 days, to do it. If your partner can help, it will only take a day.

Thanks to everyone for your replies - much appreciated. I'm tossing up between asking someone to do it for me and attempting it myself!