Depending on the tides, there's not a lot of room at walberswick or aldeburgh, southwold is a bit better. Next up is kessingland, which has got much more room, then winterton, which is a bit soft, but not too bad when the tide is out. After that, you might as well head round to Hunny.
Nah, you want to try playing around with beryl or compiz (there's loads of vids showing them on youtube), then you'll get an idea of what real transparency and a compositing window manager should look like!