I made a couple green houses out of hog panel and green house film. Fresh cut red and burr oak is 15-18% in 4 months. Box elder, sugar maple, elm, ash, basswood is that in under 3. Pretty easy to do and only costs a few hundred. If I didn't have this I would be looking for ash, silver maple, birch, box elder in my area. I think top covered and in the sun and wind you could CSS in the spring and burn them in the fall.