I'm shaping my board right now and it's coming out just as I want it to, the only problem is it's a little too think. Is there an easier way to thin it out beside just keep sanding it?
Normally guys use a power planer to mow down the foam to the thickness you want.
By hand, the trick is to shape the stringer down first with a trim plane, then level the foam to the stringer with a G-rasp or shaping rasp.