Hi all, I have a model which forecasts volatilities. I tried some paper trading using index option straddles. The result was bad because of the wide bid-ask spreads. Shall I move to FX options? Currently I have no idea about FX options. Do FX options give a smaller bid-ask spreads than stock/index options? Another question: Suppose I have modelled the volatility and correlation of the prices of the assets jointly,... and based on the model, I have a forecast of tomorrow's volatility and correlation of two assets. What trading strategies shall I use to trade volatilities and correlations in FX and FX options market? Thanks