Employers are generally not that interested unless someone is already in the country given as you can understand they get so many speculative applications where they have no guarantee someone will ever turn up or when they do arrive they have found a better offer so the employer just wastes their time.
Not saying you should not keep trying as you might find that one employer who is interested in your skills and willing to take a chance. However you receiving your COPR is one thing as just in effect a piece of paper but you are not a PR until landed so to any employer you are still not necessarily a sure investment until a landed PR
Some people have come on here said that having a Canadian address or telephone number has helped to at least get that initial interview by phone or Skype but then what do you do if they ask for a face to face in a coupe of days. If you then come clean what would you as an employer do given you are not even in the country, I know what my reaction as an employer would probably be.
