I have no problem at all with a disabled person winning a comp and good luck to them!
As I said before, this is more about people abusing the rules than it is about disabled shooters.
I think the alternate standing and alternate kneeling positions should be thought of as seperate, some people claim disablement (justified or not) and then do both kneelers and standers in the alternate positions. I don't think there are many people who can carry their gun across rough ground and still justify avoiding the standing shots.
Anschutz 2013 MEC1 .22LR
Miroku 3800 12bore