The Ariat Terrains run wide, unfortunately
for those of us with narrow or moderately narrow feet. I use mine for
ranch work, and I put on two pairs of socks to help fill up the extra
width.
I recently purchased a pair of the waterproof Ariat Terrains. I
haven't gone through a winter with them yet, but as far as I can tell they
keep the water out pretty well (Isabella gets quite rambuncious at water
troughs and manages to soak me pretty good). The only thing I don't
really like about them is that I can't lace them up very tight (and my feet
aren't really narrow either).
They make an "athletic" version of the Horseshoes you may want to look
into. The "boot" version lasted me 3 years but I found them to be heavy
and wanted a shoe I could get off and hike with. Here's a link for the
Roper Athletic Horseshoes.