A few comments from my recent transition to doubles. In SoCal I dive my double HP-100s in drysuit with a Halcyon 40 lb. wing. Weighting is 6 lbs. BP plus 3 lb. tail weight plus can light plus 7 lbs ditchable. This gives me a balanced rig in cold water - that is the most important point. Also it gives me redundancy wrt inflation (wing and DS).
In Key Largo recently I was forced to dive with rental double Al 80s. My solution was to dive dry using a minimal undergarment in 77 F water and instead of the 3 lb. tail wt. use a full 8 lb. V-weight on the tanks plus ditchable as needed to hold a 10 ft. stop at 500 psi. Also a balanced rig with redundancy and appropriate for the circumstances. Some people will not dive doubles wet and count me in that group if the water temp. will permit diving dry (under ca. 82 F for me). A bigger obstical to diving dry could be very warm air temperatures - but we get that in SoCal too.
If you get your rig balanced and are happy with your other choices you will immediately see a vast improvement in stability and trim. Learn your valves ASAP.
Also make sure your hoses and regs are done right.
Jim
In Key Largo recently I was forced to dive with rental double Al 80s. My solution was to dive dry using a minimal undergarment in 77 F water and instead of the 3 lb. tail wt. use a full 8 lb. V-weight on the tanks plus ditchable as needed to hold a 10 ft. stop at 500 psi. Also a balanced rig with redundancy and appropriate for the circumstances. Some people will not dive doubles wet and count me in that group if the water temp. will permit diving dry (under ca. 82 F for me). A bigger obstical to diving dry could be very warm air temperatures - but we get that in SoCal too.
If you get your rig balanced and are happy with your other choices you will immediately see a vast improvement in stability and trim. Learn your valves ASAP.
Also make sure your hoses and regs are done right.
Jim