How can I close a big hole in a mesh? I have a large hole in a mesh that I'm trying to fill:



I've been trying an approach like this:



I'm finding it quite tough, since the number of vertices around the perimeter of the hole don't match a grid.

Is there a better approach to filling a hole like this?
Select the whole loop around the hole with Alt+RMB (make sure to delete triangles first). Use a Grid Fill option (press Space and type Grid Fill). Then play with its settings.