In short, the best thing we as anglers can do besides observing and reporting is writing letters to our MLA's and MP's asking for more Conservation Officers and DFO Fishery Officers.
While the issues are clear to us, our elected representatives are often swamped with a dozen issues on their plate which they know little about and don't have the time to research. Write a short letter outlining your concerns, and offer suggestions on how these could be addressed. It can be as short and simple as "Dear ____, I am frustrated that people are getting away with poaching due to a lack of enforcement officers. We need more in our area."
Remember, elected officials have a duty to respond to their constituents, and if enough people make noise about it, they will take it to parliament/legislature and table it for discussion.
There's always room on this forum to complain to others how much we like/don't like something. But writing/lobbying our government directly has a much better chance of improving the way things are, and probably takes the same time or less to write them than it did for me to type this.