Now you in my territory. Been watching STXIND for years. I stand to correction but I don't think any UT manager or any Fund Manager has been able to beat it. This is the top index to beat and that is why Patrick has included it in the LeaderBoard so the umm guys above it know they are..... well, better than Fund Managers.
STXIND has in my knowledge never had a correction bar the 2009 crash. So if you are not too good with stocks, I would recommend chucking all your money into it. Just watch it's performance on the challenge.