It is extremely dangerous to go white water rafting without a life jacket and it is not recommended. However, if you are in a situation where you do not have a life jacket, the following tips can help you maximize your safety, but please remember that this is not a substitute for the protection of a life jacket: 1. **Choose the right river section**: Choose a section of the river where the current is gentle and there are not many obstacles or rapids. This can reduce the risk of accidents. 2. **Know the river conditions**: Before entering the water, try to understand the river conditions, including the speed of the water, possible obstacles and weather conditions. 3. **Wear suitable clothing**: Wear suitable clothing for rafting, which can be tight-fitting synthetic fiber clothing that does not absorb water and keep you warm. Avoid wearing pure cotton products because they become heavy after absorbing water. 4. **Stay calm**: If you fall into the water, try to stay calm and adopt a face-up, feet-down posture, which can better avoid underwater obstacles. 5. **Know how to save yourself**: Learn self-rescue skills in the water, such as when facing rapids, you should try to let your feet touch obstacles first to avoid head injuries. 6. **Travel with a companion**: Travel with someone who has experience and can help you deal with emergencies together. 7. **Use other buoyancy aids**: If you don't have a life jacket, consider using other items that can provide buoyancy, such as floats or wood. 8. **Stay close to the shore**: Stay close to the shore so you can get out of the water quickly if needed. Always remember that rafting has certain risks and is safest when done with the right equipment and guidance. Wearing a life jacket is a basic measure to avoid serious injury or drowning. Try not to go white water rafting without a life jacket.