1. If the price drops 10%, just hold. 2. If the price drops 20%, add 10%. 3. If the price drops 30%, add 30%. 4. If the price drops 40%, add 30%. 5. If the price drops 50%, add 50%. 6. If the price rises 10%, just hold. 7. If the price rises 20%, still hold. 8. If the price rises 30%, sell 10%. 9. If the price rises 40%, sell 20%. 10. If the price rises 50%, sell 30%. 11. If the price rises 60%, sell 40%. 12. If the price rises 100%, sell everything.