In reply to Andy Nisbet:
> And yes, I could go by boat, and I have climbed several sea-stacks by boat.
I wasn't suggesting climbers should go there by boat. I only went by boat because I was kayaking that day, not climbing. A much shorter trip than I'd originally planned because the weather was rough.
> But when one person swims and the rest go by Tyrolean, what's the difference if everyone goes by Tyrolean.
I already suggested one difference in the post you were replying to - you know who rigged the tyrolean and when, and what gear they used.
Personally I have no strong opinion whether the tyrolean should be left in situ or not but the other obvious difference is that in the former case the group, as a team, were entirely self-reliant to get themselves over there. It's analogous to the difference between one person in the party leading a pitch for the rest to follow and everyone in the group top-roping it.