I use a tent stake or two--multiple use. Of course it won't work if there's a big storm threatening to blow the tent down, but in that case, I probably won't be trying to cook anyway. More like battening down the hatches, crawling inside, and waiting until the storm is over.
My windscreen goes only 3/4 of the way around the stove, which is sufficient opening to keep the fuel canister from getting overheated, a big danger when using a windscreen with a canister stove (an exploding canister can ruin your day!). I do feel the canister frequently, just to be sure. This setup works well for me. Obviously, the opening is on the downwind side.
I presume you're not leaving the stove unattended while it's on!
May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey