Great tip. Thanks. I have dreadful Raynaud's and all things to do with regulation, but my new systemic regime might gradually help that, too. Here, where I am in Scotland, spoiled for choice, but they're also upgrading the old natural pools along the coastline. It's all very exciting and, whilst I wouldn't be able to do that much, feel really drawn to trying. There seems an awful faff with equipment and requirements though!