Subsurface Planner: feature request

[Willem Ferguson]

In planning it it required to consider the failure of a deco tank since 
this affects the safety margin required from gases in some of the other 
tanks. Therefore one would like to disable one of the tanks in the 
Available Gases table. Currently one needs to delete the tank and then 
enter all the information for that tank again to if one wishes to have 
that information again for other steps in the planning process (at 
least, this is what I have been doing).

What one wants is a facility to disable a tank with a special "Disabled" 
icon in the place currently occupied by the dustbin. If the tank is 
disabled, it is not considered in the dive calculations.

Of course, this implies one would have to have separate mechanisms for 
disabling and for deleting a tank (single-click = enable/disable; 
double-click = delete???)

Would this be considered as an improvement to the planner or am I using 
an inefficient or inapplicable approach?

Kind regards,

willem