I'm becoming a convert to the Clive Cussler's Dirk Pitt series, despite Cussler's occasionally abysmal English, and thought the various submaries would do very nicely for a Dirk Pitt story.
My problem is I lack access to a safe, clean body of water to do the stories in. My birdbath was too shallow, the River Thames too dirty, though the bathtub works in a pinch. A nice outdoor pool would do very nicely!
Hey Martin, do British motels have swimming pools? In the states, most motels above the rank of "Motel 6" have a pool, even if not large. I worked at a Comfort Inn in college. The pools are usually empty on weekdays. You could take a short holiday and take your stuff.
Or if you have something like a YMCA, you might be able to find pool time late evening.
Or, hey, my uncle who lives in Lake Jackson near Houston has an in-ground pool... well, my other uncle in Kansas City also has a pool, but I'm not yet willing to tell him about my closet hobby. And, besides he'd just sit around making wise cracks.
But, yeah, I share your pain. I've been wanting to do something with my boats in an environment I have control of in case I capsize something.
-Tim