At the risk of sounding a bit thick. After (literally) months of almost continual practice and attempting to correct my mistakes mid-corner it has just occured to me how important/vital it is to find the optimum speed on entry and apex. Since I am hopeless at judging my speed by engine sound I frequently find myself quickly glancing at the speedometer (the virtual one). This often results in me heading off line, off track or worse... into the arse end of the car in front. Anyway, I really can't think of any other way of judging my speed. If anybody has any thoughts or suggestions on this matter I would very much like to hear them.