In reply to wynaptomos:
> No, please don’t go there while the restriction is in place. You have to walk across the beach below the cave at low tide and that is where the seals are. I’m sure you realise how delicate such agreements are.
The delicate nature of agreements isn't the issue, disturbing the seals is the issue!
If you can access your boulder without disturbing them that would technically be fine, but local wildlife groups are watching the seal areas very closely and any activity is likely to cause criticism, and others (like me) regularly have to defend (or condemn) your actions.
Don't even think of going there unless you are certain you won't disturb seals (or nesting birds).