I had the same problem. Make sure you scoop super friggin hard and do nothing with your front foot. When you scoop you kind of have to shoot it forward with your back foot, it's hard to explain

For me what works is that I put my front foot more back and my back foot a little over the tail. It all in the scoop

I scoop it like a tre flip but keep my back foot a little more centered

Scoop more

I️ would say curl ur toe around the edge of the board just a tiny bit that’s how I️ taught my little bro

This may be overlooked however I was barely able to get it to spin 360 and when it did it would almost tre flip. What helped me was moving my front foot back and keeping my shoulders squared or aligned with my ankles

Hoe doe je 360 pop shove it

Scoop really hard; make sure you put all your weight towards the back foot

Try learning it without the pop at first if you cant already tre flip. Learning it all scooped first will help you build up the strength to help with tres and then tres will help you figure out the pop