I agree with Livius. My priest, who says the old and new Mass, has confession twice on Saturdays, before 2 new Masses on Sundays, and once or twice a week besides. Right before a major holy day comes up it is not unusual for him to be in the confessional for five hours a day!
My pastor mentioned this recently because he is 83 years old and long periods in the confessional are really getting hard on him. He always says, however, that no matter how tired he gets in the confessional, the peace he feels at helping people reconcile with God always guarantee that he'll sleep like a baby.
What a wonderful thing to say! And I'm sure it works, too, and he's probably one of the few 83 yr olds who is simply out like a light when he goes to bed.
It's very hard because we have not been training up new confessors. I think there are some young men who would probably like to do this, but they have older pastors who were developed in the post-VII "we're all perfect children of God" mentality. Therefore they are not permitted to hear confessions more than 1/2 hour per week (on their rotation, which might be only once or twice a month). This doesn't give them a lot of experience or encouragement.