The photo below is of my haffie's L front which was taken before I was done trimming. It was intended to be a "before" photo of the frog trim w my new knife. Unfortunately, my cell camera died after this photo, and the knife was a disappointment. What I am worried about is the white line, and this is the most recent photo I have. The trimmed water line in this photo is just slightly above her hoof wall; for the most part that is an "indention" between the trimmed water line and her sole.
When I got her a little over a year ago, all of her feet were really long. I had a professional trim her right after I got her b/c she had no training. I have kept them up ever since. And, b/c she has a slight pigeon toe I trim her fronts - often.
So, it has been over a year, her hoof wall has never been much longer than in this photo, and yet her white line still looks stretched to me. If I stare at it long enough when I have her hoof in hand, I start questioning if it is "all" stretch white line, or not. She is in a very arid climate, so of course there is some sole build up, but it would take a jack hammer to find the "live sole" and remove all doubt as to how much is a stretch WL, and how much is just where the dead sole "rounded" and met the wall...if any.
I am not an aggressive trimmer. But, I am thinking that, since her sole is rock hard (like her frog ) I could safely, in an effort to tighten the white line, trim (rasp) the hoof wall and white line at a sharp angle w the sole. (?) But, then, if it would be "okay"...for how long would it be "okay" or need to be maintained?