1. What are the Pros and Cons for using options as a direct substitute for the underlying, Theoretically? 2. Do you think the theoretical Pros and Cons that you know are really useful, Practically? 3. What are the trade-offs in general, when using options instead of the underliers? 4. Most importantly, have you improved your trading performance after the substituting process (or just giving-up)? Profitability %, or Smoother curve, or both? Thanks!