On hydraulic lifters that are already pumped up and stock type stamped rockers I've had good luck either using a 3/8 speed handle, or choking way up on a ratchet, and very gradually/very slowly working the bolts down a little at a time. Eventually the shaft will bottom out on the pedastals and when it does, THEN I torque to spec in 2 or 3 increments to make sure I'm not being fooled. If the job is rushed and the bolts individually reefed on, something will get screwed up for sure.

Solids are easier!