Ok, here is what I do.
I keg my beer, put it in the keg fridge, attach the gas line and burp the keg to remove any 02 in the headspace.
I then leave the beer to cool overnight.
Next morning I turn on the gas and wind the pressure up to 300kpa and leave for 48 hours.
I then release pressure and start drinking.
If I want to hurry it up, I still put the keg in the fridge and burp it and leave to cool over night.
Next day attach the gas and start shaking.
Then it is less rocking/shaking to carbonate.
Hope that helps.
Beers,
Doc