You think replacing internally-routed cables in a bike frame is bad, try doing it in a 22-foot long mast! I've known for a while that I've needed to replace a length of shock cord (for the uneducated, ocky strap without the hooks) that runs inside the mast, but have to drop the mast in order to do it. That in itself is a pain in the arse, because several other strings that run inside the mast have tails that run around the hull floor that need to be unrove before the mast can be pulled out of the boat, so it's something I try to do as little as possible!. But with heading off to a World Champs regatta late this week, the mast had to come out for transit anyway, so today was the day for tackling that mission of running a new stretchy string up the mast, then finishing packing up the boat for next week