In reply to Dave Ferguson:
It all depends on ferry times I guess. I did the devils slide a couple of weeks back, we were staying on the island but decided that the weather would be best the day we got there. Day trippers had to be back at 1530 when we went.
Ferry at Ilfracombe, 1000
Land at Lundy, 1210
Walk into the slide, 1310
Kit up, abseil in, 1330
Do the slide in 3 long pitches with a team in front of us, 1530
Walk back to the tavern, 1630
We certainly wouldn't have managed to do it in a day, we weren't particularly rushing and we did have one (albeit fairly fast) team in front of us.