otherwise I have a garbage bin full of driftwood I am TRYING to get to
sink.
I try change water on this bin once a week to keep the tannin leaching
going.


Not wanting to teach you to suck eggs, but have you tried attaching the
driftwood to an inert piece of rock and sinking it? I have found in the past
it helps the wood to become saturated much quicker than just allowing it to
float.

Regards

Mark