We have a cabin there and I spend a lot of time on the breakwater as well as on the water while I am there. I lean on the Stewart River some too in the spring and get the majority of my loopers there along with an occasional steelhead. I focus on lakers while I am doing the casting thing though. Coho, King Salmon, Atlantic Salmon, Kamloops, Steelhead, Herring are all target fish thru the season though and I have nabbed some very decent walleyes and a couple of huge pike from the breakwater too.
I meant to mention too that spinners of #3 to about a #5 are great at times too. Personally I like a gold spinner, plain treble hook, with just a slice of orange tape on the backside of the blade. I run the tape from top to bottom of the blade covering about 1/3 to 1/2 of the blade. Silver blades do well too as do plain gold. I look for spinners that have the orange tubing on the hook. Mepps makes a long cast spinner that works great.
If you decide to do this casting thing, spool up new line. Don’t tie anything on to start. When you get on the breakwater, open the bail and walk all the line off being sure the line drops in the water as you walk. When its all off to the reel’s spool, pich the line between your thumb and finger fairly tight and rewind it. When its back on the reel, tie in your swivel, then have at it. Another line you might want to consider is 8 pound crystal, but if its cold it can have icing issues.
If you are looking for loopers, coho, kings, or even a random high laker, keep the lure count down to above 20. A moderate retrieve will work great. If you get bumps but not a hook-up, try speeding up the retrieve. For the pig lakers, fish deeper. I cast as far as I can get it and allow the lure to drop to the bottom on an open bail so line can come off as the lure drops….it won’t tether back towards you on the drop this way. When the line goes slack, the lure has hit bottom. Close the bail manually, take up the slack and then reel with a nice easy rate, not fast at all and if you are using a spinner give the rod a good snap to start the spinner in deep water.
Hits can be something else and with the water being cold almost uniformly now, at any place in the water column. Fish will follow a lure from the bottom to the surface before hitting at time. Some hits might be nothing more than a sudden tightening of the line, but as a rule the hits will be very certain.
Fishing the big lake is one of the most enjoyable and rewarding kinds of fishing there is. Simply being on the water or along side of it is amazing but to catch a fish out of it is totally awesome. Of all the fish I have taken from there personally, the Atlantic Salmon is the most memorable for me. I have taken only two and none in recent years. They are a great fish. For sheer dogged determination a laker over 15 pounds will hand you a work out.
Good luck up there. The winter is a whole new world once you hit that lake.