Not sure if this has been posted before, if so delete it as required if not enjoy. https://www.youtube.com/watch?feature=player_embedded&v=7EAwDS9i9p0
We do have several and they are really as great as they look in the video. So easy to use. In fact, Robship makes a lot of useful products. Interesting to find a company that just has worked to create small helpful items. Lots of covers and bags. The hook you show led us to several of their products.
Interestingly, Hook&Moor version tries to somewhat float. The earlier Robship version tends to sink, if not extended. Apparently, the smaller inside tube is sealed, locking in air. The newer version uses dry silicone lubrication to create a seal between the two tubes to facilitate floatation.
