It is certainly a challenge to use a solar cooker if there is a strong breeze or wind. One of the tricks that we’ve used to reduce the effects of the wind is putting the cooker in a sheltered place (behind a vehicle or near a wall). This offsets the wind enough to keep the parabolic funnel from tipping. Another option is to tie two pieces of twine to the holes punched in the wings of the funnel. These can be fastened to stakes or nearby objects.
We are working on creating a wind shield for the Solar Flare Parabolic Solar Cooker, so be on the look out for it!
Happy Solar Cooking!