I've planted and grown in 4 courses over the years but I have never rolled a green as part of the seeding process.
Here at Bandon all the greens (as well as fairways, tees, rough) are hydroseeded.
In Northern California my favorite method was to rake the surface with a landscape rake in two directions, seed the green with a Gandy (as shown in your photo), then drag an irrigation hose across the surface in two directions to cover the seed....the result was excellent.
Tom