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There's a complete Oxycheq 45 setup on Ebay right now for $355yogi_tala:Couple of quick comments after having just gone through the same process. Check out the Oxycheq 45lb wing. It is designed to be very unobtrusive, and for a single tank wing provides significant lift (not sure it really is 45 lbs, but close enough for gov't work...). I traded my Halcyon 36 for it...
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Should be fine with a wetsuit. Might be a tad big if you dive dry [I know you said wet, but in case you were considering going dry]neophytediver:What about a 45# Abyss wing? Suitable for singles?