I've used deeper brackets of this style before. In my dorm we had two shot skis crossed up in the kitchen with these brackets.
I'm in the process of building a larger rack right now with this general design:
I'm using brushed steel hex bolts screwed into to laminated 1x4s with rubber tubing over the bolts to protect the skis. Each pair of skis lies horizontally across the bolts. I'll post up a couple pics next weekend when I finish the thing.