A really great puzzle. I found a way to avoid the wait and then had the second part to solve. This took me a little longer but when I realised what to do I was very impressed - a pretty method.
We were in the area today so thought we'd give it a go. The recent rain has made the GZ soggy, but the co-ords were bang on and I found it within a minute. Like the previous finder got stung a bit though.