Maybe try to get into that same stance on the bosu ball (similar to how you are standing in the pics) and then pay attention to what you have to adjust in order to get into the stance you want.
My other thought is you might be standing too far back on the board for a wave that doesn't have much speed or push. That might be sinking the tail of the board and making it harder to stack your hips over the front foot.
Replied on I am sidelined for a bit with a broke...
09 Jul 12:22
Graham Thanks, front foot.
I occasionally stub my toes on the pop up, but I forget if it's usually my front or back foot. Either way, going to wait till I am sure it's healed.