You can search for information posted by Alan that talks about hinge cuts. He is a big proponent of the hinge cut that will allow you to bend larger diameter scaffolds. I tried it last year on my 4x1 pluot and it worked well. I had to use heavier string than normal to tie them down to large rocks but it worked. Essentially you create a series of small cuts on the underside of the scaffold where you want it to bend. Cut about 1/3 of the way through the branch with a pull saw. I placed my cuts about 3/8" apart and ended up putting in around 5 cuts if I remember correctly. You may need more or less in order to get the limb to bend down.
Here is the thread on hinge cuts.