3G charters is one I have used for Jetty fishing. They are out of the Yacht Basin and did a real good job for my family outing. Tried to use them 2 weeks ago and they were booked but shorthanded due to a death in the family and 2 guides being gone out of state for the funeral. I was told many of the summer-time guides switch over to hunting in September so 3G may be one of the few who still guide out of Galveston this time of year.
Just because you can, doesn't mean you should!