The Advanced Skills Dive is used to work on anti silting kicks, helicopter turns, and back kicks first over the platform then on a swim within 2 feet of the bottom or less. We also do basic skills drills (mask,reg ,and weights R&R) while horizontal with the goal of no more than a 2 foot shift in depth. This is also where we practice removing and replacing the slung stage while neutral. Ie unclip and set it down on the platform, recover and reclip. We'll also do an OOA and simulate deploying the stage and stowing it. Last skill is a bag shoot for a drift ascent and safety stop. All of my AOW dives last at least 45 min with the exception of the night dive. That is a min of 30 minutes. Students need to have at min 3 tanks (if using al80's) in addition to the pumped 95(deep dive) and sling bottles I provide. I do no more than 3 students on AOW and prefer two or even one on one.