I have never moored in the slips. They are inside of the breakwater, pretty tight space for a sailboat. You could get in and out off the first slip. I don't know the depth at the slips. I always tie up to the bulkhead. The slips may do, but you will get bashed against the bulkhead in a north wind. I have also read that you can get behind the islands for north wind protection, but have never tried it.
The wild hog kill was a two day event. They had two helicopters, and two ranger on a four wheeler. Last year they killed almost 400 hogs.
If you could find a copy of "Campbell's guide to Cruising Texas", it would give you a lot of info for you trip.