The front point of that station is for sure. I'm sure over time the leading edge corner has been rounded off as that's where the boat hits when grounded..... I built up the front by extending the line with the batten by about 1.25" and filling the void with thickened epoxy. The aft end of the keel looks ok. Since the keel makes a pretty good dent in the block it is sitting on, it is difficult to tell how the bottom edge is until I lift the boat off the keel block.