At the risk of stating the obvious, and this really applies to all boats. make sure all the shackles used for the anchor, chain and line (rode for you purists) are tightened and wired so they cannot vibrate loose. Inspect all component regularly. I was once on a charter that suddenly started drifting before all the divers were in the water, the pin had come out of the shackle between the chain and the anchor.
For those of you using an inflatable do not tie off to anything that is glued onto the boat. For RIB's I have had a line attached to the winch u-bolt on the bow and then tied the anchor off to that. For my soft bottom inflatable, I used two eye bolts in the transom then ran a line from the bow to the eyebolts for anchoring, so all the load was on the transom