Solar Cooker Update

My group and I had to build a new solar cooker because the person in charge of taking ours home never came back to school. So now our solar cooker is a box full of tin foil and mirrors reflecting sun light into the pan. I learned that you should always have a sturdy box so the wind does not blow it over. Now we brought a weight to make sure it wont blow over. I think our solar cooker will be successful if we make the hole box sturdier.