If the tent is a little fragile but a) you want to compromise because it is light and b) you don't expect to be in a windy country where it is difficult to find sheltered campsites, make sure that the tent has a good supporting appearance. Points.
You can give the tent more strength by tying it to a tree or even using a large rock or tree trunk as a literal anchor for the wind. You can also get more information about surplus tents via https://www.usmilitarytents.com/surplus-tents.aspx.
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Very good quality tents have internal connections. If you need to withstand a strong storm, you can make a grid out of diagonal wires inside the tent.
They're a lot of hassle because it's impossible to move around the tent, but in a really big thunderstorm, they can save you from dealing with bent poles or even torn tents. Highland climbers should do this all the time.
Another part of the tent to watch out for is the floor. Floors are known as floor pools because, if designed properly, they rise a few centimeters above the wall and form a basin.
Stay away from tents where the floor is sewn to the wall directly on the floor. These stitches absorb water. Stay away from tents with floors made of this polypropylene (Polytarp) tarpaulin.