how much difference do brand new top quality e.g north or gaastra sails on a high carbon content mast improve your sailing compared to say 2006 gun sails on a 30% naish mast. ???.. any thoughts
depends on your wallet
if its full the new kit will feel amazing and you will convince yourself you are getting better
if its empty the older kit and your passion for the sport, despite you not being loaded will get you there just as quickly
what fagin says is not true, having light and responsive kit certainly makes a huge difference. not only makes everything easier but you will enjoy it more too and therefore progress faster.
I would say keep the sail and buy a new 100% rdm mast first, this will make the biggest difference.