It is unlikely that you'll find a manual for the boat. Most manufactures didn't produce them and those that did typically just filled them with generic safety information. However, a factory service manual for your specific engine/drive would be well worth seeking out.
What information do you need. As already stated, I am not sure that there was an owner's manual. My father designed the boat and was one of the founders of the company. I will look through what I have left of company papers and see if there is anything. However, I can probably answer most questions that you might have.
I would also be interested in some Anchor Ind information. I am presently looking at purchasing one and would like to know what model it is, the year of manufacture, and info regarding OE &c. To date all I know is it was a Brandon Manitoba company that existed between 1975 and 79. Would you have specific model info at hand?