I'm glad your dad has agreed now emsie - for the time being at least. That is good progress. Rather than adding a clause about the LPA only coming into effect when he has lost capacity (which I agree is likely to cause issues) maybe your father could do what my mother did. She left her original LPA with the solicitor who drew it up. When I needed to use it, she had to authorise it by writing to him. I wasn't sure if she was capable of writing a letter, so I typed it and she signed it. Would that kind of measure help to stop him fretting about what would happen?