Thanks for the recommendation! When I do the curls during the prying GS with the 24kg it hits the FLOOR so I stopped doing it. Perhaps I should try to hold it more in front of me.Another way to more core activation is to do a curl at the bottom of the goblet squat. It forces you to engage your glutes keeping them tense and tight, and you'll find that naturally you will want to extend your spine by keeping your chest up as if you were elongating.
This should get you more mileage out of your working bell!