Hi
I fish every week all winter .......................
Floating line 12'-14' leader two nymphs and lure on the point , cast out .....................put your hand in your pocket .................let the lure sink till its pulling you floating line under .............. "Then" start a very, very slow figure 8 with the odd full stop.
I was out for 4hrs yesterday , 2 oC light dusting of snow on the ground and a good stiff icy breeze !
Above method took 4 rainbows, lost another belter and got snapped off in the last few minutes
Two of the four of yesterdays bows....................
Just cos its winter doesnt mean they only take lures

This guy went nuts two jumps clear out and blistering runs

proved to my mate "once again" barbless catches more fish
Personally i think alot of people full into a trap of because its cold the fish are down ........... so i need to use a sinking line !! Wrong !
Time and time again ive seen guys miss fish after fish using sinking lines because they cant fish as "slow" as you can with a floating line.
Often the fish want it "dead slow" in winter during a slow figure 8 i will feel the line getting heavy- like a wet blanket on the end but no movement, weed ? fish ? i keep it going untill i feel "some sort" of movement then lift in more often than not its a fish
Each to his own but it works for me all winter.