12 foot would be a good, SOT are good for summer months but have alot of storage and places to mount stuff like fish finders and rod holders ect. i personally have a SIK they keep you nice warm and dry but dont have as much storage depending on the kayak but its mostly personal preference
this is my kayak here
i will be adding 2 flush mounted rod holders where the black spots are and mounting a fish finder and scotty rod holder on the dashboard
if you have more questions this site is very help full with ideas http://www.yakfisher.net/