The NOT used to have one of these, and brilliant fun it was. I was out in it myself one day ( a Saturday afternoon) towards th top of the broad when I became aware of one of Clive's heading in my direction. I headed away, and it turned further towards me.
It was then apparent that I ( or the boat ) was the subject of interest and that I was 'under observation'.
" Eeee, f***in' 'ell, there's a bloke in it" I heard, shouted loudly. They thought somebody somewhere was controlling a large model yacht via radio.