How do you cut the sinew longer?
On the back legs of a deer, you can go above the knee and find where it splits into 3 bundles. One goes over the front of the knee. Cut it there. The other two go kind of along the side of the joint and into the upper leg where the tendons join the muscle groups. Cut them just before they turn into muscle. Grab the tendon inbetween the hoof and the knee, pull really hard, and it should slide out. You might have to scrape some meat off when you get them out. On bigger deer, you will end up with pieces 15" or longer when dried. This fall, I can do a picture how-to if anyone wants to see how it is done. Here is a picture of what you end up with. Sadly, I have traded all of these away.
