Thanks for the speedy replies.
I did not clarify things too well at the beginning:
I am not looking to overclock my Pre2 - I just want to manage things to get consistent performance (it seems perfectly quick enough!) and, most importantly, stretch battery life as much as possible.
Also, until Verizon brings out the WebOS 2.1 update (assuming they ever do), I will unfortunately be staying with 2.01.