Parallel bars for dips

[kel]

At my gym, the only place to dip is a set of crappy rubber grips that are spaced too far apart. Trying to do a set of 5 makes my wrists and shoulders hurt. What is the best way to set up a dip station? I was thinking I could put 2 barbells across the safeties on the power rack. If I did try this approach, what would be the best way to keep said bars from rolling back and forth?

Thanks.

[stonerider]

on the rubber-gripped parallel bars

[ZenGeek]

scaffolding clamps

[jgh]

Four pussy pads on the safety pins would probably do the trick. Might even be able to do it with just three.