The key to success in pen making - NEVER give up !!

[magpens]

 

[KenB259]

LOL, that leads to a lot of frustration though,

 

[Kenny Durrant]

The problem I see is I the training. He wants the fish to jump. If he'd put up a barrier not wanting the fish to jump to the other bowl it would. Not while he's watching of course.
But to your point never give up on a project. Maybe give up on the approach but only to attack it in a different direction.