Bow sprit para anchor question

[Brion Toss]

Hello,
In relatively long conversation with Lin and Larry, I've learned that loading, particularly on turning blocks, is as common a failure cause as chafe, and that the whole system needs to be looked at in any event, including for handling considerations. Thus I would likely avoid outboard anchor points, not readily reachable from inboard. If that results in chafe, there are ways to prevent it, including using dacron instead of nylon in the way of the chocks. Adjustability is good.
As for the original question about the throughbolt, Zach I'm glad to hear that you are reluctant to combine functions on one bolt, particularly ones for which the bolt wasn't designed. I'd probably epoxy-pot padeyes on for stay and block. These would be stronger in both tension and shear than the bolt. There are ways to include the bolt in the job, but it shouldn't be asked to do everything all by its lonesome.
Fair leads,
Brion Toss