Matargorda Island is WMA. You would need to pack in what you need and hire a ride at Port OConnor.
Keep this one on your list, it is opening soon:
New LCRA park on Matagorda Bay opening this summer
If you are looking for kayak trails, check out the Lighthouse Lake Trails, located in Redfish Bay near Port Aransas. Encompassing nearly 20 navigable miles of water averaging 8 inches to 2 feet deep.
http://www.shallowwaterangler.com/de...2_destination/
There are some other kayak trails for birding, but I could not find the specific information--tioo many bookmarks!:cool:
Have a wonderful Texas day.
Eileen