First time I fished Laguna Harbor (pre-Ike) we absolutely tore the flounder up. We were just killing time waiting on a shrimp boat to come in and decided to try it out. The flounder were laying right against the concrete walls, and it seemed there was one about every 20-30' or so. I've been back down there twice since then (post-Ike) and haven't gotten a bite. I'll still give it a shot every time I'm there just in case the flounder are in there thick, but it doesn't hold the same appeal for me as it did after our first trip in there.
If you're not living on the edge, you're taking up too much space!