Processing luffas (loofahs)

They look ugly. The dry skin is brown with blotches of mildew, they look heavy but they are deceptively light. Yes, I'm talking about our luffas. We have a very small crop this year, mainly, I think, due to the amount of summer rain we had. But I'm grateful for whatever grows and they'll do Hanno and I, plus our guests for the coming year. There are about 10 luffas almost ready to harvest but