Here's my quick and dirty solution I came up with today. While not elegant, I just sharpened the gouge and it worked great. Slides onto the side of the tool rest, and the tool rest locks it in position and keeps it from rotating in the same plane as the grindstone. Slides off the toolrest easily for storage. I'll try to make another out of less humidity-sensitive materials, as I imagine it will swell and jam once things get less dry in the spring, or at least give it a couple coats of epoxy to seal the wood.