Fixing the roof and making hay

I was in a meeting recently discussing asset allocation when a much-esteemed British colleague suggested that a certain strategy was like "fixing the roof while the sun shines." Growing up in agricultural Ireland, I had always heard something slightly different, namely that you should "make hay while the sun shines." Truth be told, the sun so rarely makes an appearance in the British Isles, that when it does, the temptation is to down tools, grab a book and a beer and soak in the rays.