Adding inner forestay

[Brion Toss]

Hello,
You are begging some serious questions here. Why 7/16"? What do we know about the construction of that bulkhead? How can the boat be stiff, yet the loads be low? Even if 3/8 were actually bigger than 7/16, why would you choose that size? And why, oh why would you want to build a weak point into any rig component?
What square footage is the sail? What is the max windspeed it might fly in? Why aren't you considering a Solent Stay?
And so forth. You are well into consultation territory here.
Fair leads,
Brion Toss

[Rosswood]

this is very nice post