A lot of good ideas. Just to throw a little more wood on the fire; we all know the english longbows often had a top limb 1 1/2" or longer than the bottom and tended to be shot with a three finger release--2 fingers below the arrow and one above, for these two factors the bottom limb would necessarily have to be stronger. On the other hand, the shorter native american bows with equal limb length were usually shot with either a primary or augmented release, which ever so slightly, would give a different distribution of stress, and center point, when the bow is drawn. I wonder how many of us today consider that when we tiller our replica native bows, and then use a three finger release when shooting?