is there a particular/specific way to do it? or can you just roll them around in your hand and consioder that rolling em.. do you really have t od oit 3 times a day?
The more times you roll them each day, the better. Helps keep them developing 'evenly', and is supposed to help them access nutrients for growth too.
The person I know who has an excellent hatch rate turns the eggs 6 times a day! Just running your hand along the tops of them to roll them over is supposed to be OK.
I had the 'X' and 'O' marks on mine, and each evening set them all same way up, but I don't know if it matters: the hens don't write on their eggs!