It’s been (and continues to be) a real struggle for those of us with the breeds you mention to generate producer interest in NSIP/LambPlan. If memory serves, there were 3 or 4 Romney flocks and at least one flock of Coops enrolled in NSIP prior to the collaboration with LambPlan. The following would be your best leads for those breeds.
Coopworth: Martha McGrath (WV) http://www.deerrunsheepfarm.com/index.html
Romney: Stephen & Lizbeth Shafer (NY) http://www.americanromney.org/anchoragefarm/
For Border Leicesters, Margo Hanson (MN) http://www.marshcreekcrossing.com
is on this forum and has an NSIP flock. But she and I are the only two of our breed enrolled to date, and we do not yet have adequate links for other than within-flock EBVs. We do, however, have 14 years of back data entered into NSIP for Spring Creek.
I recently steered a large producer from northern California to what we hope will turn out to be a good source of adequate numbers of excellent Border Leicester rams in your state. (I’ve not yet seen the flock, nor has the CA producer, but I do know the history; unfortunately, no EBVs.) Feel free to email me if you’d like that contact info.
One caveat for Border Leicesters: If scrapie genotype is important to you, be aware that the best genetics are in New Zealand and the majority of those will be QQ at 171.
And finally, a request: May I have permission to quote from your post in an article I’m writing for our breed association newsletter? It’s been a little more than a year since I made the last pitch for NSIP so time to give it another shot.
Good luck with your search!