Docks and oxbows are typical freshwater fishing spots for carnivorous fish in particular seasons and climatic episodes. Ignoring them in these very specific contexts is a sure way of missing out on a great outing!

Sheltered from the current
The main advantage of docks and oxbows in rivers is that they offer an area with little or no current. This makes them an ideal retreat during floods.
Turbidity
In many cases, there is also a difference in turbidity between the water in the main bed and that in the backwater, whether during flooding or not. This allows species to choose a holding area that matches their light preferences, but also to take advantage of hunting areas offering better visibility.

Temperature
Last but not least, a major benefit, especially in winter, is the thermal comfort offered by these calm zones. In fact, the water flows very little, and it's regular for it to have an extra degree of temperature, synonymous with comfort for cold-blooded animals such as fish.
The presence of white
The above characteristic often leads to large concentrations of comfort-seeking white fish in winter. It goes without saying that behind this larder you'll inevitably find all the river's carnivorous species.

Survey the edges
When prospecting these spots, in winter of course you need to look for concentrations of whitefish, but you also need to methodically comb the edges, which are always strategic stalking and hunting posts. In fact, you'll generally find fish at the border between clear and dirty water, but also at the junction of the main current and the calm.