i dont think you can control the speed the bunnies run at, true you could probably make them go faster but the skitty ones that are always going to sprint and wont slow down no matter how slow and steady you are.. 
  
now the bounce off is imo a bit more controlable although in netting game nothing is a given.. 
in the video if i remember was hemp net well for a start i would get rid of that and have sheet neting or engels if it was possible. 4z, double knitt and a correct set net with ample bagging will limit this as the bunnies ball up and if its of a good size mesh the head of the rabbit is