Hi Geof,
I have never seen an advert like this before so I thought it must be quite a rare occurrence and that one of you lads might be interested, I just assumed the fishing rights would be a separately negotiated affair, but it's not a world I have any knowledge of.
I once spent some time with a colleague fly fishing for trout in Donegal which was fun, he taught me everything he knew and I did manage to catch a few for supper.