I have not inoculated wood myself (yet), but rumor has it that oysters will grow aggressively. Bore holes 1" deep and 5/16" in diameter every 6" in willow, poplar or cottonwood, poke a small plug of oyster fruiting body in each hole, cover with beeswax, and keep it wet. Be advised that the type of wood matters -- building lumber is mostly spruce or pine and most Indiana species will NOT colonize it (perhaps a good thing). Let me know if you meet with success!