Well, I processed my first batch. Turned out I overestimated--instead of 20 hind legs, I had only 16. My new friend had kept them cold and I iced them down. This afternoon, I faced the problem of processing them without my vegetarian better half, who possesses the olfactory capabilities of a bloodhound, from detecting either the aftermath of the drying tendons. Then it got through to my dull brain--I have a rented boat barn!
So I went over there, took a VERY sharp knife, and went to work. I messed up the first couple, and a couple more down the line-- and am only mildly confident that I did well, but I came away with 11 tendons, approximately 6 to 9 inches in length. There are definitely mice in the shed but I pressed an old, conical wire minnow trap into service, which with mesh about 3/8 inch in size, and the minnow openings squeezed shut, I am confident it will keep the cute, iddy biddy rodents out. I do not plan to pick any more up for about ten days, but learned enough, first time around, to make it worthwhile. Thanks for all your help and if I accumulate enough this season to make them available I will let folks know.