Painting boat question

[walleyewess]

So I finished washing my boat and I'm about to put the layer of flat black primer on. But my question now is should I buy spray cans to do the base layer of paint and pattering or if I should just buy the paint by the gallon? O and should I just put the a layer of primer on the whole boat or just on certain spots. Opinions are greatly appreciated. thanks

[Kettle]

I roll primer everywhere there is going to be paint, I also put in a textured epoxy coating on the floor over the primer where Im going to be at then paint over all of it.

Kettle