When Dave came over today we worked on this piece of bogwood in preparation for planting with a tree.
Although most of it is solid, the base had a lot of rot, so we placed some plastic mesh and covered this with galvanized wire mesh to hold it in place.
With this set up there should be no problem with drainage.
From the back you can see the pot shape we have created for the tree to be planted in.
Next spring we will install the tree.