Something like a fnPostDrawCallback possible to be called after rendering is complete?

I'm hoping to keep the table hidden until it has completed rendering to avoid the user seeing any flashing of elements as I add columns dynamically. The plan is to 'show' the table once all is ready. Is there some way to do this? I've tried 'fnInitComplete' and 'fnDrawCallback' and they both seem to occur too early. Fanks!

- Daniel