I'll start:
Personally I do not think that I truly deliver any real "all out efforts" until the faster GR's and the training crits start in late march. Only exception being the 2 indoor TT's I do in mid february. Until then, I'm pretty much unable to go all out by my own motivation. I think this speaks to why I seem to hang in races that really dont suit me... I'm too wussy to generate maximal performances in practice.