I think the latter, not because of the money but because it puts potentially less pressure on them in having the last few groups swell in size as a number of riders that finished come forward to ride it again. I think there is an argument to discount the second lap, but probably not by as much. If you start thinking about the logistics, if there were no costs involved or just a nominal fees to cover the small additional costs (medal, medical expenses of second ride taking more toll on the rider, etc), imagine how many riders would sign up irrespective if they have a realistic chance to make it back to the chute before the last group goes off, where now the only ones that is signing up are those that are confident in their ability to make it in time. Then again this could be probably catered for by much more stringent qualifications. Just don't see it as a black and white argument and there are much more things to consider
