Well...they should be attached close behind the driver, from level with the top of the shoulders to 4" below that, according to the rule book.

The only place you have is the floor - if you find a set long enough. And that is not a good place. It could actually do more harm than good in certain situations. I think I would do without before I went to the floor.

I would ask some slow stocker guys what they are doing. Not a lot of options.