Re: Chainplate reinforcement
Chainplate failure is a more common cause of rig-loss than you might imagine. For some reason owners often think they'll last forever, when really they're subject to crevice corrosion even more than the rigging is. (The rigging is out in the fresh air). Everybody replaces the rigging on some kind of schedule but often the plates are not replaced.
If you're going to all the labor to un-bed and remove and re-bed the plates, I'd recommend replacing them while you're at it. A stainless shop ought to be able to make up a set cheaply. Of course if all you do is light-air day sailing, that might be overkill, but judging by the picture, the plates get loaded at least sometimes.
"True, your boat will outperform mine to windward, but my boat will always outperform yours at anchor." --MedSailor