When the Fraser river sockeye fisheries first open up back in (I believed) 1995 I used 3' leader, red corkie with tuff of red yarn and float just like anybody else fishing that time. It usually took a while before I caught my limit. Then a few years later, somebody with a bright idea decided to use 10-15' leader to start b.bing. Being stubborn, I kept float fishing until I was getting tangled up with the b.bers lines and finally called it quits when I got hit by frigging 15' leader with hooked in to my right arm.
If I want a sockeye now, it cheaper for me to line -up at Steveston fisherman wharf to get my sockeye there.
Silex-user
Back then with less crowd and more spots to choose, me and my old timer friend often would just do true bottom bouncing for sockeye with 2-3 ft leader, a few split shots, and a small piece of coloured sponge. The secret is reading the water and finding a certain configuration of river and flow pattern where sockey will travel very close to shore in what we called a 'sockeye lane'. Once you find that, it is like a sockeye fest. Cast with a small soft metal size 2 to size 4 hook with a short 6-8 ft rod, have a max of 5 bounces, then if no taker, gentle lift and repeat, and often there will be a head shaking sockeye. Of course you do that later in season when the water is clear enough for them to see the coloured sponge. In murky water days, the long rod & Silex were the tools. But it is more enjoying to hook them on smaller lighter rod. Nowadays, unless you are there first light, you can't choose your best spots for this method. Often guys are standing where sockeye are hugging the shore. LOL.