You weren't clear at the beginning if you were looking for 1tag, or 2?
If your Dad is around 60, you got to be in your late 30s/early 40s.
I recommend you look at a tag for him only. That way you can help him and share the moment when he does pull the trigger.
Last year my Dad was 82. He wanted to get us tags. I told him to put all the money into one tag, double the quality.
We really enjoyed our hunt although he didn't kill the biggest bull on the mountain.
Late 30s/early 40s, you got 20 years to hunt some awesome tags if you keep applying.
Just my opinion