primer before paint?

[Dip_Krew]

ive got my boat sanded down a layer, i was initially going to primer the boat then spray the topside with an automotive 2 stage paint. (the paint was free) after sanding it smooth and filling in the gouges ext.. i realised i never needed to sand through the original gel coat, so there is no bare fiberglass exposed.

do i still need to lay down a high build primer or can i just spray the paint overtop of the sanded gel coat and expect a similar quality?

[thatkidchris19]

You really need to primer unless you want to repaint it in a couple of years. Sometimes you can get away with painting over an already painted surface but only if you know the paint on the item is EXACTLY the same as what your putting on it and you wet sand.