Carting/Drafting is what swissies were bred for.
All of the dogs I've hooked up cart have enjoyed it. Some of my friends kids are more excited to see the dogs than me, since they give the wagon rides.
Titan, Fury, Fender, Helix, Arty & Myna have all passed at the novice and open levels, as well as Fender doing an open brace with Titan's son Lester (which is much harder than a single). Helix and Arty also have managed a pass in Novice Brace.
GSMDCA Draft Dog: Novice (NDD) Open (DD) Master (MDD) swissies can also take the Berner or Newf draft test and draft as teams of two! Teams of two are called a brace, Novice (NBDD) and Open (BDD).