Those are no small flares, they are huge! That all needs to be taken off, all the way around. That is most likely why she is cracking. Thrush005.jpg
The pink line shows her actual hoof and what size it should be. The yellow is all overgrowth and needs to be trimmed off to prevent cracking and more white line stretching that I am betting is pretty uncomfortable. Also her bars are over grown and crushed, they need to be trimmed down, and her heels are running foreward, they need to be backed up to a normal level. gallery-04a-Boomer-front.jpg
This is a healthy Draft horse hoof.
Other than that and the white line stretching due to that, they look nice and healthy.
I am not saying to make her have tiny hooves, but her hooves now are unhealthy and need to be trimmed, she does not need pancake hooves either, as they are now, they are not functional if they keep cracking and that is due to the flares.
ETS: haha Redhawk, I was going to add that site too to explain about the flares and such.