Scary stuff - when I got my first horse trailer (for my first horse - though I've been riding for ~20yr) it adds an entirely different dimension to tow safety.
It's a pretty light ~3200lb aluminum Featherlight 2h Xwide Xtall w/ changing room. Technically I could use those 5500lb uhaul and reese hitches you can buy locally, but I wanted something OVER the max of my tow vehicle so I'd never have to think about it again. I pulled in behind my gf one day in the driveway and noticed her reese draw bar / ball were "bent" - turns out the welds were off, the thing was made crooked! You'd think that would be an easy jig to make?
Anyways I got the draw-tite 16,000lb forged one-piece drawbar and a 12,000 ball.
Honestly the funny thing is, I probably only paid $75 for both on amazon.
Best peace of mind ever, and they (better) last me for the rest of my life!