PFD’s and hand rolling
I’ve found that it’s harder to hand roll with a PFD. But if I’m anywhere other then a pool, I’ve got one on, so it’s good to practice with the same gear you’ll be wearing in conditions. The reason that it’s harder is because the PFD hits the coaming and makes it harder to lay flat on the back deck (YMMV, but with a hand roll, laying on the back deck is the only way it’ll work for me). Experiment a bit.
Bob