The white is just epoxy dust from sanding. I haven't taken the time to wipe it down yet.
The deep V shape of the hull provides lateral resistance without the need for daggerboards. I am eventually going to add some skids that are about 4" deep along the keel for beaching and drying out. These skids will also add more lateral resistance for going to weather. These will be made of hardwood and will provide a sacrificial layer for wear. The front and rear cavities are the built in flotation chambers that keep the boat afloat in case of being holed. I'm probably going to fill these chambers with empty bottles in case they themselves become holed.