How big should they be? I'm planning on fitting two safety eyes (for harnesses) in the cockpit. Easiest access is from the inside of a cockpit locker, although I'm aware that mounting the eyes here means that there is a free edge at the top of the locker (which presumably reduces the strength of that location compared with a place where there is no free edge). Anyhow - I know the eyes should have a "large" backing plate - but how large is large- 5cm x 5cm, 10cm x 10cm - bigger??? Should the plate be wood or steel? Cheers Jonathan