Upper Laguna or Lower Laguna? Since you are talking about PINS, I will assume you want to be around the Corpus and Port A area. There are plenty of flats around the area...PLENTY! Staying on fish throughout the tides is pretty tough from Round Rock. As for finding places to fish and finding fish, I would advise you to get a hook-n-line map, they are a great start...finding fish takes a little more knowledge. As always, look for slicks, feeding birds, and surface disturbances made by fleeing baitfish... These are all signs of fish. I havn't been to CC in a few weeks, but we were on fish for two days in the intercoastal at the dropoff. I am heading down there Wednesday until Sunday and plan to fish twice a day each day, so if you PM me to remind me, I will be happy to tell you what was working for me and where.