If you go to the beaches where people launch their kayaks and go fishing you will find people with local knowledge as to what works best in the area.
For example an inflatable is a pain if you need to inflate and deflate it each time you use it. They are a last resort if you have not way to transport a regular kayak.
Some of the stand on types are fine for protected lakes but terrible out in the ocean. Short boats are also good for ponds and creeks but track poorly out in the ocean. A rudder can make a huge difference out on large lakes or the ocean in being able to easily maintain a heading even when there is a strong wind (more than 10 MPH) blowing.
There are boats designed specifically for fishing and they will have lots of features provides right at the start as with the mod-pod on the Ocean Kayak Trident Angler boats and some are designed to make it much easier to attach a fish finder with minimal or no drilling of holes in the boat.
Kayaks designed for fishing can weigh from 45 lbs. up to 110 lbs. and this makes a difference in what you can lift up onto a roof rack or what you can carry down to the water.
If you check the Texas kayak fishing forums and the fishing forums with a kayak sub forum you can get useful advice and there are often used kayaks for sale that have been fully equipped by their owners and ready to put in the water and start fishing.
We recently bought a special kayak trailer and will be using it at least half the time instead of the roof rack on the truck. It makes it easier to load and unload the kayaks and the smallest car can easily tow the total trailer and two kayak weight of under 500 pounds. It is also the easiest way to haul kayaks with a motorhome or truck camper.