For the last few years I have usually parked at the apartments immediately northwest of the stadium. Timpanogos something. Students will stand out on the curb with a sign and sell you their parking space. I've never had a problem. Friday night we did the same thing. Paid $20 to a 20-something tall blond kid that was out there with others selling their spots.
After the game, my car was gone. I figured it got towed. The parking spots are numbered with the apartment number, so I went up to the apartment and a girl living there confirmed she called for a tow truck because my car was in her spot when she came home. Claimed she knew nothing about any blond kid selling her spot.
An hour and $175 later I got my car back from the impound lot.