I should have mentioned the trick you discovered, but you got it. I didn't even notice I do that, which is to use a basket in the store instead of a cart.

Gatorade and the like are good if you're doing a long athletic effort such as a long bike ride. If you're not, then it's junk food. I do drink Gatorade on long rides. And it does help.

And yes, crushable stuff on top. Peaches are very delicate, as is most fruit but not apples.