Try chinning the next rabbit,one hand firmly around the back of the neck and the other under its chin.Push the chin up untill you feel the neck go loose.Done right it is a very quick dispatch and can be done while the rabbit is still in the net.
Well said "robroy" definatly the best method of dispatch (IMHO) quick,humane & as said can be done in the net even if your in a tight spot.Chin em it never fails.
ATB