dont get what you mean by sticking a plant of wood over your grow .would there be any point to this when you can either do sog.scrog or lst or even super crop. i dont know if you ar going to try this but it just seems a bit crazy as if the plank of wood was any thicker than 1 inch it would prevent light from reahing the plants and that kindas defeats the purpose does it not . so can you explain a bit more in detail about the method you are proposing.