Actually it depends on hunting style, area hunted, salt or fresh water, rivers, lakes, big or small water, rough or calm. Trailerable of do you need to be able to carry it?
I really don't think there is a 'perfect' duck boat. Too many variables. That being said, I do most of my hunting with an aluminum 15' canoe as my main mode of transportation. Camo'd of course. Pros: I can lift, carry, drag or paddle it into areas not accessible to other modes of water transportation. It's also quiet and really enjoyable for jump shooting. I use a home made version of a double ended kayak paddle. My paddle is slightly bigger and the shaft is a little longer as the canoe sits higher than a kayak and is also wider. Cons: It's not the best for long trips. Over an hour one way is hard on my knees and hands. It sucks in big rollers on the Puget Sound. I've got first hand experience too many times. Not enough room. Me, dog, gear - full up. Partner? Then I gotta leave some gear home.
I hunt big and small water. I want to be able to lift my boat into the water and back onto the trailer if no good launch is available but have a good galvanized trailer for when there is a decent boat launch. I also want my boat to be big enough to hunt from in open water and wide enough to stand when shooting without rocking so bad that you can't hit anything if the dog moves or your partner stands up right when you're going to shoot. I'd put a stowable type of blind on it also. It also needs to be light enough to man handle around the mud flats of Nisqually and Willapa etc, yet heavy enough to be stable.
I also want a modified V hull rather than a flat bottom for cutting those big waves without getting beat up or damaging the hull but also don't really want a V bottom as they tend to sit deeper in the water which will not allow me to get to some spots I now hunt. Hull size in conjunction with weight create displacement. That's what's gonna make your boat stable in the water. Hell of it is, a happy medium needs to be found.
I've been looking hard at a Lowe 1652MT w/gal trailer from Cabelas myself. I don't really like that middle seat but to get away from it I'd need to go with an all welded hull at about twice the cost.
There are a lot of really nice boats out there that will cover most any aspect of waterfowl hunting. Is there a perfect one: Yep, the one you pick out.