Congrats, nice jump. I'm surprised you went slider up with that delay next to a cliff. Your opening looked very nice and on heading, I've not had the same luck with slider up and 3-4 second delays.
I did a lot of research before going to this island, but it is so remote (look Foula up on Google Maps) that there was little photography available to tell me exactly what it would be like. So when I got to the top and looked down I did see the big shelf, but still figured 5 to 6 secs. In freefall, I had to change that!