Sorry to hear about your boot leak.We had light frost overnight, which is on par for the season. We've had a lot of rain yesterday (and over the last two months) which is keeping me from doing my walks on my lunch breaks.
The leak that my car has developed in the trunk/boot has now created a veritable swimming pool in the spare tyre well.
Sorry to hear about your boot leak.
They can be absolute mongrels to find. I had the same problem once.