Concerning the recemmendation of the power cat...
I spent two seasons operating a 26' World Cat with a cuddy cabin and I have some strong opinions concerning them because of the time I spent behind the helm. I would travel approximately 150 miles a day fishing anywhere from 50-95 miles out of Galveston. Anyways, here it goes:
Positive: Yes, cats are more stable at rest in the water. I did not suffer mal de mer nearly as badly as I did on my 25' Wellcraft mono hull.
Yes, they are more economical concerning fuel consumption. I could average 1.25-1.5 miles to the gallon at a cruise speed of 28-35 mph seas permitting.
Piloting into a headsea was excellent. If they were tight, I could run right over the tops of the swells. Fun in the right conditions.
Negative: In following seas, the hull was miserable. It would not track down the face of a way with any amount of predictabliltiy. In fact, it was a Herculean feat to make it home in 4-6' following seas. No straight line navigation, no, in fact, zig zag was the name of the game.
In quartering seas, the bow would be caught and pushed relentlessly and at times, the boat would want to roll over. Scary to say the least.
Bottom line is that I sold the cat because it was squirrely. Going out in the northern gulf demands a long boat, narrow beam, and a deep, deep vee. Consider the likes of Contender, Intrepid, Fountain, Donzi and the other SKA designed, competition oriented hulls. You will get your best ride from this class of hull. Consider moving to something like 29-31'. You won't be disappointed.
Hope this helps,
Mike