I'm waffling on pre registration... I did two 600 last year, but I also screwed up my knee on a 1200 and was a long time recovering, haven't managed anything more than 90km since then... also packed on a few pounds too. I was thinking of just waiting to see what is left toward the end of May; make sure I can handle a 300/400 and save the 50 euro if I can't. I'd like to do the 84h start this time and try to spend less time faffing about on the outbound leg, now that I've seen it all.