welcome to AA
If you have a couple big rocks, securing it to some good heavy rocks will force it down and the pressure will force the water in to the wood... sometimes it takes quite a while for wood to become waterlogged....
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry