I do think that at times "bottom bouncing" you can have sockeye bite, it's just rare.
The one year I was out I caught 10 socks the one day all reeling in, and all 10 of them were right through the nose.
There was no hook set involved, and as I said, they hit on the retrieve right along the edge.
I was just using a huge roe sized hunk of chartreuse wool with a pencil weight and a 3 ft leader.
That was also a year with very good visibility...
Still realize though that 90% of even more of the socks that people catch bottom bouncing are flossed.
If you're legitimately bottom bouncing with a 2-3 foot leader and roe, then the chances of getting biting fish are much greater.
The fact you catch more than others is just what josh has said... it's all about feel.
When I use to bottom bounce regularly I would get fish 5 to 1 vs my buddies just because I was more in tune with what fish felt like.
Sounds like you do it enough that you probably have a much better feel than most people = more hook ups.