bruce , much appreciated, you invariably add knowledge to every conversation.
Bought rough sawn white oak , about 1.25 inch thick, for decking years ago. Amazing. Local sawmill also, I had to go 4 miles into a thick forest. So sturdy, and with extra nailing it could be better than plywood?
Thanks for the tip bruce, much obliged. Hmmmm, will be filling the tank in my truck, should be in your driveway by 9 am. tomorrow, ready to visit your friend's sawmill............
Rico