When you attack someone once and close their ship page they are removed from the battle tab, but if you hack them they are still there. Which leads to accidental repeats or waiting until someone is disabled to get a new opponent to hack. Granted that is not long, but still I would like new victims right away

spend the 5 E and attack them
once you close the battle window, they are gone

I do, but the point of hacking for me is not to gain exp. So this is counter productive,

Part of the problem with this idea is sometimes the trap hits on that first tap and if its a k-trap you now have a 50% chance of removing the wrong effect with a null or back to waiting 30 minutes in the middle of trying for blues. It has been suggested before as a setting choice so you can have it instantly go away or try for all of the badges in one go if you want. I would be fine with that idea since it allows the user to decide if they want to attack

... back to original post then ... pen & paper ... write em down

I have a notepad running next to GL and copy/paste after every hack, if someone sounds familiar I just glance over. Not perfect but it works.

oh dear lord +1 to idea of optional removal, not as bad at my current level as my opponents tend to switch themsleves for me but earlier on hacking the same person over and over again sucked, and that 5 energy expendature actually ment alot.

+1, similar idea not too recently suggested here
I have no patience to keep track and rely on comms, which some clear out time to time, making it harder to know weather or not you already attacked.

+111111 !!!!!! i ussualy got alerted because doble hack .