ScubaSteve
Wow.....what a DB
I took PPB during my AOW - what a waste of time and money that was. It was likely my instructor that was the problem, but there was nothing peak or performance that I learned in the class. No weight checks, no ballast placement, no real practice or feedback. It was essentially "jump in and descend, start adding air so you don't hit the bottom. - GO!"
It was also the last PADI class I took. YMMV
I got basically the same thing only when in the water, we had to follow the instructor as he see-sawed through the water up and down. This might have been even mildly uselful had he not been racing through the water such that you were kicking up and kicking down.......nothing performance based at all.
I wound up just diving a lot and tried to improve and learn as I went. Thankfully I got to where I thought my buoyancy was IMO Peak .....then I bought a drysuit and eff'd things up again.