Beaufort, NC Goes "Crunch"

Last night we anchored in Town Creek, just north of Beaufort, North Carolina. As we entered the inner harbour I spun the boat to place our anchor and CRUNCH, we stopped dead.
Based on the rest of the debris in the harbour from Hurricane Irene I assume I passed over a dead boat. While I should have had at least 8' below our keel it is evident that there is something lurking in the depths of Beaufort - that goes crunch in the deep.
We have made it to Swansboro, NC. this morning. While we normally like to anchor it has been recommended that we take a marina due to the current of at least 1.5 knots. That will turn in the night, swing our boat at anchor, and threaten to drive us into the bridge to the north of the anchorage. Things like this keep the captain from sleeping at night.
Marinas offer peace of mind. (Julie notes they have a great shower here.)