Large rocks up to 1000 lbs can be moved about 10 ft at a time with one or two come along's and some strong 3/8 inch nylon rope. A slow tedious process. Doable only if you only need to move them 30 feet or so, and you don't have too many to move.
Protruding rocks that are to large to move can generally be broken up, or taken down to grade with a good man wielding a 10 or 12lb sludge.
If you have, or can borrow a pick up truck you may wish to consider building two 8ft tripods of 2x4 construction. Join the two at the top with a 4x4. Attach your come along and lift the rock to truck bed height.