Snagging, lifting and lining are a part of the SR culture no matter where ya go on the river system and/or any nearby tribs..
They are the most prevalent method of fishing there.
Until recent years outright snagging with a large weighted treble hook was legal on much of the river.
On my first trip up for 3 days I spent 2 and a half trying to make fish bite with all the wrong equipment ( NOW I know that- not then)
A fella in what is now the DSR came over and told me they don't bite and showed me how to line them-that was it for a very long time.
There are not enough LE to stop it nor is there any kind of quantitative "push" for its extinction.
This is big business in the area and this is the main style of fishing being done- no wonder its tacitly allowed.
SR is not pregnant in this - watched a TV show on Alaska last week with guys shoulder to shoulder doing the exact same thing.
Hate to say it but its part of the deal.