Taking a contrarian view, my neighbor George uses a farm roller to flatten the gopher hills in his fields, indeed to push the rocks back down so he doesn't hit them with the haybine.
For that purpose he pulls a 2 foot diameter roller that is filled with water.
It's important to do this at the right soil moisture levels. To dry, and the bumps don't squish. To wet, and even the bottoms squish down and you have a set of roller wide grooves. You will need to experiment, but off hand, a day after a significant rain is when I would start trying.
I don't see how a roller would make hollows deeper. The advice about soil compaction is valid, however, and this is more likely when rolling wet. I would suggest dethatching your yard before, and aerating it after rolling.
A fertilizer spreader is a time consuming way to do it. Figure: A 40 x 60 foot lawn is 2400 square feet. If the hollows average an inch deep, then you need about 1/2" * 2400 square feet = 1/24 foot * 2400 square feet = 100 cubic feet of soil. Most of those hand crank spreaders do no more than 2 liters. (quarts) That's roughly 1500 trips to the dirt pile.
A good solid wheelbarrow is 2 cubic feet. 2 cuft does 48 square feet of lawn or about 6 feet x 8 feet. So 50 loads. Figure out your spacing, mark them some way, drop a wheelbarrow load on each marker, spread with the back of a rake (splurge: buy a landscape rake -- 3 feet wide.) water and roll.