I know with a normal hoof, the "halfway" mark is from about an inch behind the apex of the frog to the toe. Anything longer than that would suggest a long or flared toe.
What about a club foot? I have been taking weekly pics of my horse's club foot since pulling his shoes. I was expecting to see the heels de-contract and the hoof begin to take on a more round shape. Instead I'm seeing a hoof that is becoming more oval and elongated. The heel is actually coming further back, while the toe length is getting longer. The weird thing is, from looking at it from a side view, it would not be evident that is happening under there. The toe does not appear to be flared, the hoof still looks very much upright, and the toe callous is right at the edge of the toe.
My question is, do you encourage a known abnormal foot to take on a normal shape? Is it normal for a club foot to assume a more oval shape? It all seems to be working just fine for him, so I don't want to force something that might never happen when it's working just fine for now.