Yep - Pressure flaker is much more controllable than a bopper, but both have their role ...
Its good to have both ! But rather than even making a bopper, you can use a rock.
Look for a nice river rock (smooth) which is weighty and sits nicely in your hand, I have a "set" of 3 or 4 with increasing weights;
that way I can use a bigger rock if I have a difficult bit to remove.