Thanks for the feedback Kev. We did it on 60m half ropes too, and when I got to the top I had to take in a few armfuls before George was "Tight!". He belayed on the plinth (about 3m off the ground). I personally guarantee it's less than 60m!

Four days for one person to clean a new route at FH is pretty standard. I don't know what'll happen in a few years, but I'd like to think that because it's an open groove, and doesn't take drainage, veg regrowth will not be significant. Looking at a picture I have of it in an uncleaned state from last year, there really wasn't much veg on the route to begin with. My work had more to do with loose rock and getting the lichen off the side walls for that monster bridging effort.
Obviously the advantage of being able to ab down the line first is that you can brush it on the way down.
Still, this is a constant battle at the Head. Two very handy friends of mine backed off the "regularly" climbed Blockbuster that same week because it was so green. Conversley, George and I were able to enjoy Scorpion which was shockingly green and overgrown and probably hadn't had an ascent in 2 or 3 years.
Thanks again for your comments.