On Wednesday, August 12, 2015 at 9:48:18 PM UTC-7, Steve Leonard wrote:
...Think you misunderstood his question, Bob. He was asking "Why scarf from the outside and make a very large area you have to re-finish? Why not scarf the inside, and have a small area that needs the more aesthetically time consuming finish work outside?" Inside is less "optically critical".

He uses the word "patch," but doesn't mention "scarf" anywhere, hence the general shape of my reply. I suppose that a scarf repair might be considered a patch, but a patch is not necessarily a scarf repair.

Thanks, Bob K.