RJS has some good advice.
Width is the key and then stuff like metal thickness layout etc.
I prefer the vbows over the jons but jons are very popular amongst the flyfishing crowd.
Unfortunately width and thicker metal also means heavier and if planning on cartopping then this a huge priority.
There is also a huge difference from taking the kids out on Rolley Lake for a spin or heading off to the far end of Sheridan Lake so all this is something to think about.
A 12 ft tinny and 9.9 was the standard fishing mobile for years and can get you out there in decent conditions.
My favorite piece of fishing equipment is probably my Minnkota 40 lb with maximize.
I hook it up and it allways works flawlessly.
Variable speed for trolling is a must in my books.
A good battery is hugely important as well as a good charger.
I just bought a smart charger from Canadian tire this season and am happy with it so far.
Not sure if you want to run two batteries in a 12 footer though as the good deep cycles weight a lot to begin with.
As already said you can sometimes find a package deal for best price but this is about the worst time to be boat shopping.
Feel free to ask anything about small aluminums as I have had a few over the years and know a little about them.
When you do get it and need some good rope,track me down.