Well, as the article quoted above me so eloquently researched, good diet, good trimming, and good practice of keeping horses on dry footing or keeping their areas clean will help promote good hooves.
In a dry environment, as long as diet is good it helps, but some people find letting water buckets overflow so their horses' feet get a little damp helps. If you're in a wet environment, you should definitely give your horses some relief by giving them someplace dry to be for a few hours of the day.
Thrush you can get in either environment.. I'm still learning about abscesses but I do know thin soles don't help.
"Strength is the ability to use a muscle without tension"