Thank you everyone for the feedback. I'm new to this, and it's great to see such a good response.
I'm still a little confused however....is it really that clear cut i.e. your either P1 or PUT - no inbetween?
I have actually been in contact with a flying school in Kissimmee, which say they can offer me some time whilst on a visa waiver. Do they know a genuine loop hole or are they bending/breaking the rules?
If I fly with an instructor purely for the experience and don't log the time in my log book is that allowed under the visa waiver?