Plot hole: Ginger can hold Mrs. Tweedy single winged. She can also tip up a feeder full of food. So now we have clarified that she is one ridiculously strong hen, how does she need help pushing up a deck chair? 3 other chickens were able to do it with ease earlier.
Plot hole: There's no visible evidence that Team Rocket has taken away Ash, Misty, and Brock's Poké Balls when the gang was in the cage, so why don't the Trainers call out their Pokémon (Brock's Onix would've helped out very much) and escape the cage?