All but maybe 5 blinds can be reached by foot, if you know where you're going and the lake level doesn't rise. I wouldn't say a Mallard is totally unsuitable, but you'd better know your limits. I personally have an 8' rowboat that suffices for most days. But it's wide, deep and heavy so it can take more than a canoe. Generally I only use it for transporting gear, and only using to retrieve birds that can't be reached on foot.
Remember, shoot straight and shoot often.
Good... Bad... I'm the guy with the gun.