well I tested a few pieces of line epoxied and filed it with a rasp, it works but the fibers are pretty tough on yachtbraid and fuzz up a bit, maybe it wouldn't be much of an issue under fiberglass but I'm going for dynel cord stuffed in a slot cut by a hole saw,,that thing was sitting around waiting to be used! but definately wear a mask, epoxy dust is not nice. With a couple layers of s-glass glass over sculpted dynel it should be ready for dragging.