Not only were the original eyebolts rather small, the backing plates were badly corroded and there was no way they would have withstood any sort of force applied to them if someone went overboard for example.
The original installation is shown below.
These were replaced with Wichard waterproof u-bolt Wichard
Pick a size to to suit, large is good, and I added a piece of hardwood as a backing plate reinforcement to prevent pull through in the event the bolts are heavily loaded. I might be a little paranoid although it was very little extra work.
( picture to be added)
Webbing jackstays were from Jimmy Green Marine Jimmy Green Marine
A Dragon's Tale 