Best Hull type?
Nothing is idot proof. Idiots seem to exceed specifications.
For large waters you might need to think more than 30 ft if you are at least smarter than an above average idiot.
It''s not that you can''t handle smaller boats but it sure ain''t fun. It is for fun I assume? Folks have done around the world in boats slightly larger than my dinghy, but it was not fun.
The difference between fun and possible is about 25 ft. The Gulf is bigger than Texas.