2 AL80 as doubles...cold water diving.

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Double Catalina AL80's with a DUI TLS350 drysuit and 200g undergarment here in temperate SoCal Waters (10 to 19deg C range at depth over the year's four seasons) needed 8kgs/17lbs total of lead: 2.7kgs/6lbs Backplate; 1.8kgs/4lbs channel lead between the two cylinders; 2.25kbs/5lbs tailweight and a 1kg/2lbs trim weight in a waistbelt pocket.

I'm 70kgs/170cm (155lbs/5'-7").

In the tropics, for Luxfer s80 Double AL80's, all I use is a 1kg/2.2lbs Aluminium Backplate, with a 0.5mm full skinsuit. The cylinder bands are set a little lower to trim for horizontal hovering (i.e. Double Luxfer Tanks ride higher than my Catalina's in SoCal homewaters).
 
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Living in the tropics, we almost always use twin AL80's. With my aluminium backplate, I have no need for additional weights. I am 5'10"/150 lbs. My wetsuit for twinset is using a 3mm with vest hoody.

Postscript - clearly I did not read the topic of the thread. My apologizes.
 
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