For anyone who still doesn't think horses need to land first, the BBC is running some superb quality coverage this week, including stunning slow motion, high definition footage of the horses.
Guess what? At a flat out gallop at the finish, the winners are all landing heel first. Why should it be healthy for them to land any other way at walk or trot...?
By the way, its interesting to watch the gait differences in the same horses at walk round the paddock...unfortunately they don't show that footage in slow motion (!)