I have used various plugs and spoons in Quesnel Lake successfully.
Lyman plugs -3" for trout
Lucky Louie plugs 5" for lakers
Wonder spoons up to size 7 for lakers
Apex spoons up to five" for trout and lakers
They can be run off weights for trout, but for the lakers you pretty much need downriggers. Hope that helps, have a good time. Quesnel lake is awesome, enjoy the trip.