Sorry to let you down, I've had a good think about it, for me the HP2 is not the bike to ride in the D2D but think its a great bike
I've competed in the D2D 5 times, 1st four in a 2 man team and the last time as Ironman and we (Ian) and me rode the laps together.
I would suggest if two or more of you are doing it on HP2's or bigger bikes that you enter Iron man (1 man team), ride together as it is a large lap and it's difficult for the marshalls to monitor every section of the track and you could be lay under your bike for a long time if your off the track.
I am thinking about buying a cheap enduro bike and entering the 24 hour race, as this is something new.
Best of Luck
Could start with the Langdale Rally in June/July as a warm up/practice?
Cheers
Would be up for some Rallys and have talked to Mav about it as I have been told there good fun on the bigger bikes
I'm out Trail riding most weekends so why not come out for a play when you have a spare weekend you would be more than welcome (Mav comes out when he's not working away)
Small clip Pipster posted as a taster of what we ride
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Louis