This works on my Prince Speedport Black but probably won't work on others unless you wrap string around frame. For one piece job, start a with knot but don't tie off at the end. Leave enough string to clamp and wrap string a few times around the support beam between the O ports then use a zip tie to secure. Do it again on another set of ports. I use a hybrid and end up with 4 zip ties on top and 2 on the bottom. It will add some weight. No knots on mains and one to start crosses. To reuse string, cut the zip ties and string again.