Pooman position and heavy back foot...

What's the best remedy for this?

Notice this in Pool sessions in the ocean this is less prominent. (Based on footages).

I am doing Bosu exercises standing and arching and paddling on it, at this stage I am hoping it will helps.

The pool where I practiced is more like slab type of waves. Sydney intermediate sessions the first part is easy, but at the second part I got jacked in and late take off with pooman.

Please any help welcome.