Some well considered lollipopping is advisable, but I would caution against removing any healthy green leaves and only remove any yellow leaves, for when they are yellow, they have served their purpose.
Removing healthy green leaves only reduces your plants capacity to make energy, thereby slowing growth.
Besides, if your plant did not need those leaves, it would not have grown them in the first place!
Just remember -
Maximum amount of healthy green leaves = maximum energy production = maximum growth.
It is that simple and basic plant biology.
Hope this helps, Organoman. (and outspoken anti defoliation advocate!)