SanDiegoSidemount
Contributor
The Z system's wing is very secure on the harness. The main reason is that the vertical back strap of the harness is actually threaded through a sleeve on the inside of the wing. So the wing is attached top (3" webbing), left (3" elastic), right (3" elastic) as well as in the strip down the middle.
As @decompression mentions, a T-weight system can be attached for carrying a lot of weight (up to 32 lbs or so), though then you need to forego the "sleeve" attachment of the BC, since the vertical strap is threaded through the T-pockets. (I do this, and it's still fine.)
For tropical weight amounts, just attaching a couple of 6lb weight pockets (there are many attachment points to choose from) should work just fine.

Here's the way I rig my Z-Tec (37lbs/17kg of lift) for cold water tech diving. Argon bottle tucks in nicely next to the vertical part of the T-weight.
As @decompression mentions, a T-weight system can be attached for carrying a lot of weight (up to 32 lbs or so), though then you need to forego the "sleeve" attachment of the BC, since the vertical strap is threaded through the T-pockets. (I do this, and it's still fine.)
For tropical weight amounts, just attaching a couple of 6lb weight pockets (there are many attachment points to choose from) should work just fine.

Here's the way I rig my Z-Tec (37lbs/17kg of lift) for cold water tech diving. Argon bottle tucks in nicely next to the vertical part of the T-weight.
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