[Chris1529]

By random pairings, I don't mean to call the class then just have everyone come up to the lanes at their own free will. I would propose something like this:

After the first time trial, there would be a good idea of how many cars are there running the eliminator. After the second time trial, as you pass the scales or get your et slip, you can draw a number out of a hat ( with the exclusion of #1-still give the #1 a bye if there is an odd number of cars. Use that number as your qualifying position to set the sportsman ladder just as you would qualifying. That way, cars are still paired up so there are no waiting games and no pitting beside someone you think you can beat.