Do you really need to protect them?
What do they cost ..bout £28 a pair last time I checked.
How long will a pair of hooves last?
Well ( I admit I use 7's but I gather pj's rubber is about the same nowadays) I use my stilts as much if more than most, I use um on most surfaces, from grass to gravel set in concrete ( fab grip but like nuclear grade sandpaper when it comes to scraping away at hooves)
Ive been bocking 2 and a 1/2 years , not on same stilts I admit. But it was only last month I fitted my 5th pair of hooves overall. I d say hooves should last 6 months . If you were a jogger would you complain if you had to by new shoes every 6 months , nope it would be par for the course.
Or there is my other idea --wear 'baby converse trianers'