I came upon this subject a tad late, but wanted to make a couple of comments...
First, Easyboot NEVER made a mini-sized boot;they made a 'Pony' size, which I found *could* work on some of my minis in certain circumstances. I bought two of the 'old' design,original EB in 'Pony' size, trimmed the back lower, AND, inserted some pieces of ridged rubber carpet 'runner'to act as pads, inside,which took up some of the 'slack'. This worked OK on my 34" horse,with slightly small-for-his-size, more oval, hooves, at least on level gravelled roads. I later bought a full set of 4 of the 'newer' standard EB design, complete w/ gaiters, in 'Pony' size. They can work for my 38" horse, but are too large for the 34"er.One thing I've considered, but not yet gotten around to trying, is to cut some pads to put inside of them out of old mouse pads I've saved. My logic is that this *might* serve two purposes...to offer even more protection/cushion for the horses' soles, and possibly make it easier for the boots to stay on, even if they are a bit large? Worth a try, IMO.
It well may be that EB is no longer even making the 'Pony' size: I don't think I've seen it in any EB ads in quite some time.
Great news about the Renegade maker's information! One thing that I think *might* help? For a bunch of mini owners to get good, accurate measurments of various driving horses' properly-trimmed feet, width and length, to compile a 'datebase'.I will try to do mine as I do the next trims(which are overdue!)
Margo