I would NOT pull any of those boats with less than a 3/4 ton vehicle.

And, just because it says 3/4 ton doesn't mean it's up to the task. You still have to make sure you have the right engine/trans/rear combo. Last, don't forget to make sure the hitch is rated to tow what you are towing, too. A hitch can say it can tow 10k lbs, but only if it is a "weight distributing" setup, which most boat trailers can't have. So really, then, you need a class IV or V to tow 10k+ lbs.
Ya'll might think I'm crazy, but I always try to make sure the setup is up to the task. There is too much at stake.
If you are only towing it around the marina, then, that is one thing. But, you'll get tired of paying marina fuel prices and other incidentals real quick and before you know it, you'll have that rig on the road going somewhere...