I am also thinking about getting out for April trout for the first time if the ice holds up when i have a free weekend (likely easter weekend).
In regards to your request for north of prince albert you have lots of good options in Narrow Hills Provincial Park, at least one, maybe more in Clarence Steepbank Provincial Park (kit or ridge... cant remember which one was the trout one, access may be an issue as i don't think the park is plowed if there is still snow on the ground) or piprell. Also read about people trying at Camp 10 up near highway 2 past montreal lake.