I suspect that any bow roller that you find would do the job. Check out availability at marine salvage places. I bought a salvage bow roller at Bacon's in Annapolis but have seen many others at other places. Mounting is just a matter of drilling a few holes and a few bolts or screws. Just make sure that the roller will allow your anchors to sit side by side, one a bit further forward than the other. I'll post a picture tomorrow.
