We had case(s) where we could not prove that the person did or did not summitted Whitney and obeyed all the guideline
We spent a lot of time on that case.
So if you go thru the trouble of doing Badwater146 and you spend the money, rent, buy, borrow one or two or 3 GPS trackers
It is YOUR responsibility to prove you submitted enough documentation and to remove all the doubts about your crossing and your credibility.
To make things simpler, the application deadline is 9mo after your crossing and before May 15th the year after your alleged Badwater146 crossing (unless you have extreme good reasons, we are flexible and here to encourage people)