First time growing tomatoes in a 12 X 12 foot plot, we developed blight late summer. I don't have a lot of alternate places to plant, and I don't want to spend a lot of money and time in fungicide. Do you think burning the area will destroy the blight? I was thinking of burning my fall leaves and hoping that would purge the soil. (I normally don't burn leaves but would do it if it would help.)

Burning might reduce it to some degree, but I don't think it will totally eradicate the problem. You did not indicate how you grew them, but staking or tellising the plants so there is good air circulation around them helps. Avoid watering the leaves, particularly in the afternoon/evening as they don't dry off as quickly as earlier in the day. Our recommendation is to rotate the crops so that you don't have the same crop in the same location for at least 3 years. While you don't want to use fungicides, various tomato fungal diseases can be managed with good cultural practices.