I like to turn the motor until the cam lobe points directly away from the follower for each pair of valves. Takes a little longer, since I don't do two pairs at a time, as the manual instructs, but I know I'm on the base circle for each adjustment.
On a 4 cylinder OHC it just don't get any easier than this.... Now on the other hand when we are working on a 20 cylinder you bet your sweet tushy that we roll the engine over to exact crank positions so that we don't waste time and energy. Another point that bears mention as it happens is to make sure that you don't get your intake & exhaust clearance backwards and that your not getting your SAE and Metric readings crossed up either as that can make an engine clatter like the mad hatter... Other than that check your timing chain adjuster to make sure that it is not sticking as that makes an engine rattle; but worry not as these engines will almost NEVER jump timing.