The kite has no power while it inflates, so no problem hot launching a double skin.
Some would say you should power it up, so it does not accelerate and it will fill much nicer, instead of having it flap up fast with sloppy ears
It all depends on what you ride, say you ride freeride/wave hydrofoil with single skin kites - then you can hot launch powered or depowered, it fills up instantly.
And easy to land the same way.
If you ride in a lot of wind, with these, it can be a handful to launch and (hot) land.
Are you jumping powered on a TT or hydrofoil, with double skin kites, you can hotlaunch yes, but not land.
If you hydrofoil in marginal wind, hotlaunch and landing is easy with double skins of course.
And the hotlaunch when windy can be sketchy too if you dont have short lines.
If you have landed a fully inflated double skin backwards in some wind, and want to start again - I am pretty sure powering it up almost backing it, and slowly working it up should be the less powerful way, but can be extremely difficult.
Fully depowered will race it up at max power.
Peter