Fishing is allowed on the lake. It is not necessary to register at the Park to fish; you only need to have a Quebec fishing permit. It is possible to buy a seasonal or daily fishing permit at Larocque's corner store or at Bonichoix grocery store in Notre-Dame-du-Laus.
Many outfitters and campgrounds located on Lac du Poisson Blanc or Lac des Sables offer boat and motor rentals as well as lodging. Consult the Outfitters and Campgrounds page to find these businesses and their contact details.