Maybe you could rig some sort of "harness" to keep him horizontal .... I saw someone do it for a gold fish before, so just a thought. I just lost my aro a couple months ago. He too, jumped but he dried to the floor during a storm at night. Good luck with whatever decision you make.
REALLY sorry to hear about your aro. My heart goes out to your situation, my silver jumped out of the tank a couple of weeks ago. Very heart broken.
An a similar note, what is the best way to cover the tank while avoiding this situation? I think there is a lesson to be learned here. I for one do not wish for this to be repeated to anyone for that matter.
I put him down... I put him in a cooler with Tranquil that made him go to sleep in like 10-15 seconds then I threw him in the freezer. When I got home he was still floating and his jaw was starting to get raw. I felt bad for him and didn't see any chance of him being able to recover. Thanks for all the nice comments !!!!