This might lead to situations where the fish are too aggressive and won't bite.
It's possible the fish have entered the nest, but they are eating the nest material instead of the bait.
If this happens, it can often be seen from the fishing results: anglers will frequently find subtle movements in their float, but no serious fish bites.
If you can't resist raising the rod and casting, you probably won't catch any fish.
If you're lucky, you might snag a fish, and the reason for this situation is actually quite simple—the fish have entered the nest but are only eating the nest material and not the bait.
The subtle movements of the float could be because the fish brushed against the line while swimming, or it could be the movement of water caused by the fish in the nest, which activates the fishing gear.
In short, under these circumstances, you are just one step away from catching fish, but that step is impossible to take, which is quite unfortunate.