Mitch said:

I clearly remember my dad saying OOPS!..... I am not just filling in things that didn't exist. I remember that night clearly!

And I saw it at the drive in at 100 TWIN, was that a 70 mm release?

hmmmm

I'm with Poita on this on. You remember it well, no one's arguing with that... But memories are very faulty and prone to corruption. We have bootlegs and prints and sound recordings, but NOTHING has even remotely turned up to suggest that the grappling hook missing scene exist. One just has to listen to the music recorded:

Where in the world does the music exist for Luke to throw his rope again and again?