Most sod sites recommend renting a lawn roller to prep/level the soil prior to installing and after putting down the sod to eliminate air pockets so all the roots are in contact with the soil. I found a 50 gallon plastic drum filled with water was much better because of the additional width. I wouldnt do this on a serious slope, though. This was actually the funnest part of the job.
This parrot is no more. It has ceased to be. Now it's a tiny ad:
Infect brains with permaculture! Give out gobs of the permaculture playing cards richsoil.com/cards