OK, so I tried the in the ditch on my latest project (runner and centerpiece pad) with the Blackford’s Beauty patches. It was quite hideous and after ripping it all out I’ve decided to tack it, but I’d like to back tack it, that is knots in back rather than the front. Does anyone with experience with this method have any suggestions? I think embroidery thread should do, and small knots in back evenly spaced in the design (at all corners etc.), though I don’t really want to interrupt the patched pieces themselves; any thoughts on this?