I'm in NE North Carolina and it has gotten really hot and dry - no dew - no rain. Henry hasn't worn shoes for almost 4 years now and his farrier said he has really dry, hard hooves. The cracks aren't major, just on the surface less than a 1/32 or so deep but they allow his hooves to chip round the bottom edge the last week or two between trims which is every 5-6 weeks. The farrier said when it gets really dry & the cracks start to either overflow the water bucket so Henry can "soak" or put hoof treatment such as Rain Maker on him everyday. Henry is on a grass pasture 24/7 with free access to a barn with a dirt floor. He also gets 4lb of senior feed am & pm. With the heat I haven't been lungeing him and he hasn't been ridden in 3 - 4 years. The vet says other than some joint swelling he is in perfect health. He was a hunter/ jumper in his younger years.
I know TBs have notoriously bad feet to start with and want to try to keep Henry's in the best shape possible. Last thing I want is for him to have health issues because I screw up his feet!