Here is a picture on one days work of garden clean up. About 800 lbs of rock. Have done this every day for about two weeks now.
I wasn't able to rototill rows last year because too many rocks had surfaced. Tthey just keep coming back, but at least I can rototill rows next year.
Biggest one so far (several years ago) was a granite rock just over 3ft long, two and a feet half across and just over two feet thick. Took three people to roll it out of its hole.