Looking better and better. A couple of things from a newbie here. I built mine as per the plans and I do indeed need to increase the size of my rudders and was thinking of similar to what you have, as my turning was not the best in my opinion. Also, as per the suggestion, automotive paints will stick to epoxy, just make sure to 'rough' it up, but that goes for any surfaces to be painted with automotive paint. This also applies to most paints. By roughing up the surface, you will give the paint something to 'bite' into. Paint will also stick to non sanded and or shiny surfaces, but the adhesion will not be anywhere as good. Also, heed the advice of a good cleaning before paint.