No, don't use a net since my steelheading days.
No, if I can't safely land a fish from where I am casting, I don't cast. Or else I break it off. It's just a fish.
Yes, dozens if not hundreds of days in the snow.
No, I kneel and cast from six feet farther back.
No, if I don't get to a fish, I go on to the next one. Lots of fish.
Yes, a few times. Coldest I ever flyfished was -15F. With a wind chill of about -50F. Because I was an idiot.
No, usually I scream like a girl, because the water is COLD, otherwise I wouldn't be wearing my waders. And I don't wade like I used to, because, it's just a fish.

I do sort of miss the 130-days-a-year times, tho. But not enough to do them again.