In reply to Jus:
> (In reply to UKC News)
>
> "For some of them, I ruined my onsight attempt by watching videos many years ago, when I didn't really think about onsighting 9a+..."
>
> That's a pretty strict onsight ethic!
There should be a time limit. If you last saw a video of your intended onsight more than 5 years ago then it's still valid.
In fact that may even make it harder. I know I've tried routes having seen video footage, and thinking I had a good idea of the moves but remembered it wrongly.