LONG-POINTED knives should be banned and protective barriers should be built at all well-known jumping sights to lower Australia’s suicide rate, a psychiatrist says.Buy-backs of guns and car conversions that prevented them from being used for gassing suicides have coincided with a drop in suicides by those methods but no increases in most other methods of suicide, a University of NSW psychiatrist, Matthew Large, wrote in an article published in The Medical Journal of Australia today.”You would think that if you prevented one method, then the person would move on to another method but all the evidence is against that,” Dr Large said.”If you make suicide more difficult, then people won’t do it or they will choose a method that is less successful.”People who decided to commit suicide were often drawn to areas and methods that were known, such as The Gap, Dr Large said.Lifeline: 131 114