Hoof Boots.
In our initial review of the horse, we may agree that he would benefit from hoof boots to assist him to exercise comfortably through the transition period. Horses adapt very quickly to boots.
With my own horses, Bramble needed boots because his soles were very thin and flat, Link only needed boots for the rougher ground, Apollo didn't need them at all and stomped over every surface without any problems.

All newly barefoot horses should have no problems at pasture or in the arena.
It is a real pity to make the horse worry and stress about being uncomfortable over rougher surfaces, and it is absolutely unacceptable to exercise him on ground that causes him pain - so hoof boots have a very valuable role to play during the transition period. I don't need to use my boots now that my horse's feet are conditioned, but I retain them in case of any sole injuries or bruises in the future.
Hooves need to be conditioned to work on a variety of surfaces and the plan should be to work on the surfaces that the horse is comfortable on, building up to the more challenging surfaces as the hooves become conditioned. This was never a problem for Apollo - he came straight out of shoes with tough and resilient feet! Many horses do.
There are a wide variety of hoof boots and the best boot for you will depend on the work you are doing and the shape of your horse's feet. I use the Easyboot Bare hoof boots, but there are many other choices including Old Mac, Renegades, Cavallo, Boa and so on. A good place to buy hoof boots is
http://www.thesaddleryshop.co.uk
Hoof boots should be worn for work only, and should not be left on for turnout. When your horse is turned out, he should have the benefit of his feet being in contact with the ground and being stimulated to grow and callus naturally.