> 1 you said a vee bottom tends to have the least initial stability but how
> is this shapes secondary stability? i could deal with a tippy boat if i
> knew its secondary stability was good. if both are bad i would be open to
> suggestions of what shape hull i should use.

Secondary stability is usually pretty good when you get the flat sides of the "V" level, but remember that you don't have much width to give you buoyancy, so you are not going to have great stability. Don't let it scare you off, just be prepared to get wet the first few times you go out. Flatwater racing kayaks are less stable than your boat will be and people have been known to standup in them. Just takes practice.

> 2 my storage consraints limit me to the 12 foot length, any advice on how
> to make this length boat as fast as possible ?

Make the waterline as long as possible and keep the ends rather full