A nice, dry day today, so Ihad a few practices, and did some really good launches.
Holding the car just below the biting point, revvving at 2000rpm, then, once at the biting point, quickly, but progressively (not dumping it) releasing the clutch, and progressively giving full throttle up to about 5500 rpm before changing into second.
I was getting a little flicker of the ESP, but none of that horrible bogged down feeling. So much better. I'll try it with the ESP turned off tomorrow and see how that goes.
Thanks for all the tips, Like some of you have said, it's all about practice. It was very satisfying to start getting it right though.