Stevie, where did you hear about quickest length gains while jelqing is going against the LOT? to me the LOT isnt even concrete and take it with a massive pinch of salt, dont let that corner you .. if you jelq enough than in time gains will come.
To answer your last post even though its aimed at dld is more than likely because that is a position that worked well for dld and he saw good results from so recommends it in his routine .. I loved just to jelq straight out with a slight bend upwards to engorge the blood.