system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Would the Rebel's deflector shield at Hoth already have been up regardless of where Ozzel jumped in from hyperspace at Hoth?

The Rebel Alliance started an immediate evacuation as soon as they knew about the probe droid. They wouldn't be able to evacuate the shield generator or power plant so why not immediately turn the deflector on in case the Empire arrived before the evacuation started? Would they have been able to bring any unused fuel for the shield generator with them or did they need to leave it behind, either because it was too bulky to move quickly or that they needed it in place in case the shield was needed for combat. If they can't evacuate the fuel, there is no reason to not keep the shield up until the transports are ready to take off.
gpt
The shield prevented their own ships from leaving. They temporarily dropped it to fire the turbo lasers out and allow ships to slip out with it. But there wasn't enough power for them to keep it permanently on and it was a giant glowing beacon of where they were. Better to leave it off until the enemy was near them or within attack range than to broadcast their position to anyone that may be looking.

Edit: ion canon not turbo laser.