Having read ASRs over the years with people capturing false glideslopes and getting overloaded and ending up low a long way from the runway, I always put the runway in the fix page and put a ten mile ring on it, aim to be at roughly 3000 feet above the runway at this point, it's a rough ball park check but it can save your ar$e when you're having a bad day.
Be warned if the runway changes it could screw you up.
I feel so sorry for these guys, every professional avaiator will F it up at some time, it's just how bad it is.
As an old instructor said to me years ago, you won't live long enough to make every mistake, learn from others.