Being new to solo diving and gear configuration as described here, your informative posts have me making a beeline for the workshop to build my rig and devise a utilisation plan. Ok done, patent application registered. Primary gas, Y yoked single any size mounted normally to bc. Two firsts with all ports filled with whatever I can lay my hands on. Go to beach and hand off my stage to the first person who asks "hows the viz". Put bc on backwards to enable me to identify leaks, entanglements and crack valve when I need to take a breath. As the onlookers gather I mount my trusty pony namely the Mustang ride on mower now kelp and net buster obviously fitted with telescopic exhaust and snorkel, that also acts as my redundant air. Where did I attach that mouthpiece? The coup de grace are the foot diameter 360deg mirrors so I can spot groups of other solo divers and go and say G'day.