Choosing the right lure
For some of us, this may seem obvious, but increasing the size of the lures we use allows us to better select the size of the fish we want to catch. Fishing with large lures throughout a fishing session is often thankless, the hits become rarer, and when small fish attack it is not uncommon to miss them. However, perseverance pays off for the most courageous and it is often a guarantee of success.
Whether it's a soft lure or a hard lure, a large lure is primarily attractive to large fish because of its presence in the water. It is long and wide, which makes it more visually identifiable to a predator. Its volume displaces a greater quantity of water and emits more important vibrations. These vibrations are easily detected by the sixth sense of the fish, the lateral line. A large specimen does not need to "see" your lure to know it is there.

Good times
Indeed, if your lure does not need to be seen by large predators, it is absolutely not necessary to fish only with large lures when the sun is at its zenith. To increase your chances of success, you should be at the water's edge during the most favourable hours.
The legal fishing hours in France are 30 minutes before sunrise and 30 minutes after sunset. It is in this period of time between the legal fishing time and the appearance of the first rays of sun (or the disappearance in the evening) that we must concentrate our efforts. If you are not one of those who get up at dawn to go fishing, I recommend you to choose days when the sky is overcast.

What is considered a "big" decoy?
Each fisherman has a different vision of what a big lure is. The pike fisherman will immediately think of lures over 15 cm while an angler used to trout in small streams will not dare to exceed 7 cm. The compromise is obviously to find a large lure, only if it is large in relation to your fishing area.
Each environment has its own particularities and especially different sizes of trophy fish. In some rivers the largest fish in a line may not exceed 40 cm, while in large rivers a trophy fish is not considered as such before 60 cm or more.
If I can give you an idea of the size of lures that I consider big for trout, the length of the lure should be more than a quarter of the length of the fish you are looking for. A lure of 5 cm for a 20 cm trout seems reasonable, but a lure of more than 15 cm can scare the fisherman who wants to tackle trout of more than 60 cm. However, this is what is at stake in the effective search for specimens, you must not be afraid instead of the fish.