Vasek,
If you know this I apologize - first never ever turn the motor by the prop just after you've crashed it you'll just force any dirt into the bearings.

I turn the motor upside down and with a toothpick get all the dirt I can out of the carb and out of the fins. Then with the motor upside down I use a brush to get the remainder off. Then remove the carb and look at the bottom of the barrel and into the crankcase. If you do not see any evidence of dirt just remove the back plate and use kerosene in a squeeze bottle to flush the motor and you should be good to go without tearing the motor apart. If I see dirt in the crankcase I'll still flush the motor with kerosene and then pull it apart.

I use kereosene because it is much less flamable than gas and cheaper than glow fuel. I only use the antifreeze in the crockpot method when I want to clean the outside of the motor. It by itself won't get any dirt out of the inside. You'll need to flush it first.

My two cents.
John