Update:
The rocket pack race numbers have arrived!

I will be sending numbers 1, 2 and 4 off in the post this week to the respective rocketeers.
Meanwhile - number 3 is now in place.

Note the ballast belt and passing horn positioned as part of the race outfit.
I was thinking, if we get 25 rocketeers with race numbers on their packs, I could get a book together of photos of the 25 competitors, get a short piece written by each of the 25, maybe do a map of the race route - and use an online book publisher like blurb.com to put out a book titled 'the rocket pack collective'.
What do we think? (I would need a few contributors...)