Dear Norseman and Riveraddict,
Quebec is the only Canadian Province where weight in the fly is legal on scheduled Atlantic salmon rivers. In all other provinces (New Brunswick, Nova Scotia, PEI, Newfoundland/Labrador) ANY additional weight in any form is ILLEGAL. The regs are very clear on this.
Dec Hogan fished Quebec's York, Dartmouth, and St. Jean rivers in early June. His was a great article in the old Wild Steelhead & Salmon (now Fish & Fly: I miss the former); as those rivers are in Quebec, weight in the fly is legal but cerainly not necessary at that time of the year. The York is one of my two favorite rivers in Quebec--a great place to tangle with big, bright early-season fish.