Well depending on your decoy spread, equipment carried, hunters hunting, and motor..... you may want a bigger boat, especially if your building a blind on top.
From my experience, a wider bottom is better. Either build a low profile blind that is head high while sitting in the boat, or find a way to drive it while standing up...... so as to navigate safely.
I have some pics somewhere where I built a blind on my first little 14' boat. For what it was, it turned out good. I didn't have a motor on it, so decoys, gear, and such was hauled in it while towing it to the spot with my brothers hunting boat.
I would invest in one of the Avery Marsh Foot, Push Pole, & paddle attachment..... it will come in handy. I used a pvc frame (but if I did it again, I would use conduit). I wrapped the frame in camo fabric, then sprayed it with water repellent solution. Then draped a camo net over the whole thing to tuck small pieces of brush into. I had some brackets (that they stopped producing that also served that purpose) that I could bend in the direction needed and then stick small limbs into to break up the rectangle shape of the blind.
Mount you some lights on the corners (front & back) for navigation close to the bank or when in swamps..... these also come in handy while setting decoy spreads in total darkness..... you will need a good deep cycle battery with a maintainer mounted onboard so that after using the battery, you can just plug it in and it will keep your battery warm and constantly charged.
You will need some tie-down eyes along the rail. I used eye-bolts with big flat washers on each side of the boat (top rail if made right) and an acorn nut facing the outside of the boat..... you may need to put a regular nut on the inside to tighten against if the eye-bolt shank is too long (or you can cut them off some).
This is just some of my own experiences..... if I can find them, I will post pics of my rig before I had to let it go.....
Also, carry a small kitchen size fire extinguisher..... never know.
