i teach a lot of rescue divers with twin sets as i dive in a twin my self i want to know they can get me out !! it is very hard work with all the weight i recomend using your wing and back plate but attach a single but its up to you if you would like to know more about the course just e mail me i try to teach every one who wants to use a twinset together as some skills differ from the basic ...
rossisdiving@hotmail.com