Unfortunately, by my observations, most toy haulers are built to haul dirt bikes, quads, and really nothing bigger than a small side by side.  The toy hauler my friend had was uncommon with a significantly reinforced floor.  I don't recall (it was 20+ years ago,) if it was a special order, or an uncommon model.  I would not make the assumption that it's safe to haul a full size buggy just because it's a toy hauler.  Then again, I doubt that most people would even consider a full size buggy in a toy hauler, a race trailer would make more sense.