I tried a few but rests before settling on the JAG lockdowns... Can't be beat, the varying rubber inserts allow you to choose how gripped in you want them.

ATM, i place my rod in, i can not pull it forward or backward, nor sideways without dragging the pod about. When i lift them up however, effortless and the pod doesnt move in the slightest.

One JAG Product which is definitely worth the money... Unlike their catapult which is garbage