I live in East TN. We have 55-60" of rain per year. During our trial of EasyBoots (several years ago) we noted a significant problem with water and debris getting into the boots. The water had the effect of “soaking” the hoof tissues (a Very Bad Thing) and the debris had the effect of “sandpapering” the hoof tissues (a Very Bad Thing). Drilling holes in the bottom did not work all that well, as many trails are naturally damp and moisture entered the boot from the bottom. And it did not address the debris issue.
Each boot had to be individually fitted to each foot or we had very bad heel galling. The “spare tire” argument (common in their ads of the day) was just not true.
The EasyBoots of the time were very difficult to get on and off, but we never had a problem of “casting” a boot.
In very dry climates these things may work (in spite of the possible “sandpapering” issue), but any one that permits water to enter the boot during a stream crossing means you either stop and empty the boot or “soak” the foot.
For these reasons we’ve rejected boots over the years and use traditional metal shoes. They don’t have any of these problems, nor do they cause any degradation to equine health over the short or long haul when properly used.
G.