Bought a 21' 1979 Cobia Condor last year. Would it work for around Galveston or Port O'connor? Here is a video the previous owner posted with the ad.

deep-vee, high sides ... don't see why not, as long as you don't go too far out or in rough water. With the forward helm running in bumpy seas might be like handling a Falcon on Texoma ... could envision the boat operator getting launched skywards on a really good wave! lol

Make sure you've got a good seal around that outboard unit. I had to drag a guy in that was taking on water from around the outer unit. Stalled his motor and he was a drift. To make matters worse he had no buckets on board and no bilge pumps.

Bilge pumps...since we're on that topic...when fishing offshore you want the biggest bilge pump you can get. And if one is good, two is better.

Get familiar with the various sights pertaining to offshore sea conditions. If seas are predicted for anything more than 2 ft then you shouldn't go. At least not until you get more experience offshore.

Conditions will generally be worse at the mouth of the jetties. So if you have 2 footers offshore and a falling tide then you should expect confused seas and 4 footers in the mouth. Things can get a bit sporty in the mouth so take your time and don't over extend yours or your boat's abilities. Stay close to shore initially until gain more experience. Offshore is a different game. Just be careful.