Rodding Radiator Survey

[Domino]

I have a plugged radiator and am considering having it rodded out but am hesitant because I was told that many times its just produces lots of leaks.
I would like to get some idea of the success rate in rodding out radiators Please share your experiences with me - basically have you had this done successfully or did it just cause leaks? If many have successfully done this it will make a difference in my decision. Thanks.