In the winter of our southern region, I am in Hubei, and I don't know whether it belongs to the south, but the winter weather temperature often hovers around 5 -10, and there are still many fishable waters. 
Look at the weather first when you go outThe weather in winter can be very variable, and different weather conditions have different effects on fishing. In general, the following types of weather are more suitable for winter fishing: Sunny weather. In winter, it is cold in the morning and evening, but at noon, the sun warms the water and the temperature, and the fish are more active and easier to take the bait. Especially in the foggy and frosty weather, it is very cold in the morning and evening, but after 10 o'clock, the fog and frost dissipate, the sun comes out, and the water surface is very calm, at this time the fishing effect is the best, and 12 o'clock to 15 o'clock is the best time for fishing. Persistently warm cloudy or cloudy weather. There is no biting north wind in this weather, the sun will not be too dazzling, people feel very comfortable, the fish will be relatively stable, and will not be affected by temperature changes, although this weather is not common, but if you encounter it, you must take advantage of it, and the harvest of fishing will be great. The day before the cloudy sky turned clear. This kind of weather is generally after the cold snap, the temperature will rise significantly, the fish will feel the temperature change, will eat a lot, and there are many opportunities for fishing at this time. A day or two before the sunny day turns cloudy. This kind of weather is generally after the warm current, the temperature will drop significantly, the fish will also feel the temperature change, will eat a lot, in order to cope with the cold weather, at this time there are many opportunities for fishing. The weather after the cold snap. This kind of weather is generally after continuous rainy and snowy weather, the temperature will rise slightly, the fish will wake up from hibernation, there will be some activity, and the opportunity for fishing is also good. 
It should be noted that the following types of weather are not suitable for winter fishing:It was a sunny day with a low temperature and a cold and wet day with a strong north wind. This kind of weather can make people feel very cold, the fish will be lazy and unwilling to move, and the fishing effect will be poor. Constant rain and snow. This kind of weather will cause both the water temperature and the temperature to drop, the fish will go into hibernation, will not react, and the fishing will be very poor. A day when the weather turns cloudy after consecutive sunny days. This kind of weather will make the fish feel the change in temperature, there will be some discomfort, will not be easy to take the bait, and the fishing effect is average. Chilly cloudy days after a sharp cooling. This kind of weather will make the fish feel the change in temperature, there will be some panic, they will not take the bait easily, and the effect of fishing is average. Frost and fog do not turn into cloudy or rainy weather. This kind of weather will make the water surface very blurry, and the fish will feel uneasy, and will not take the bait easily, and the fishing effect is average. In short, winter fishing should choose warm and constant weather and avoid cold and changing weather, so that you can catch more fish. 
Try to use spices as much as possibleThe water is cold in winter and the fish don't have a very sensitive sense of smell, so use some spices to attract the fish's attention and let them into your fishing nest. The spices of winter fishing should highlight the word "fragrant", so that the fish can't help but come and eat when they smell your bait. The spices of winter fishing should have the following characteristics: fragrant but not fishy, and it is easy to rot in the water in winter, so you should use some fragrant spices to make the fish feel comfortable and willing to stay in your fishing nest. It is very cold in the water in winter, and the distribution rate of spices is also very slow, so use some long-lasting spices. 
My own approach is to use rapeseed cake or rice bran cake as a base, which has a natural fragrance and the aroma of cooking oil, which can attract the attention of the fish very well. These nests are also coarse, which can keep the fish hungry, and have a long-lasting effect that keeps the fish in the fish. It would be even better if you added some bloodworm rice, which has a little fishy smell but is not too heavy, which can increase the appetite of the fish and make it easier for the fish to take the bait. However, bloodworm rice should be used in small amounts, not too much, otherwise it will make the fish too full, or make the water too fishy, which will affect the effect of fishing.