In reply to dereke12000:
> Have to agree about wandering around unattached at the top, was firmly advised about this during SPA training.
> Similarly, was advised to have prusik not attached to leg loop but to belay loop, and to extend the belay device upwards.
Yes, I was a bit surprised to see that, I would have thought PyB would have been using the currently fashionable method! The leg-loop method is less of a faff though, and most harnesses have a little loop on the leg-loop for the purpose. They say your body can be turned so that the prussic can foul the device and fail to lock. Never seen it happen so can't comment.
When I'm abseiling on serious sea cliffs I use an industrial abseiler, copious rope protectors ("spirolls" are brilliant), and the rope in a stuff-bag so that it pays out automatically as you go down.