My understanding that ablation
for AFib is usually effective, that is, if your are in AFib when the ablation is being done the doctor can "see" where the problem area(s) are.
As for blood thinners, are you saying you have a problem keeping in the range INR 2 to 3, or do you bruise anyway? I have none of those problems, so my EP and Cardiologist do not recommend an ablation for me, my symptoms are too minor, so they say : >).