ucfdiver
Contributor
I'm hesitant to speak for Jim, but most all instructors reserve this right. Basically they're saying if you're someone who continually shows unsafe behavior or thinking, they reserve the right to fail you. Those who don't say it on their website should/will say it in person.
To those folks who suggest Jim Wyatt, I have a concern based upon his website. "An improper attitude may constitute grounds for denying certification, regardless of proficency." I've never seen an instructor post anything like that and it strikes me the wrong way. If I am a proficient, safe, diver and the instructor arbitrarily decides he doesn't like my personality, I'd rather my money not go into the toilet. He may be a great instructor, but based upon that, he's not for me.
Careful bashing PADI and not other agencies, TDI has been issuing cave instructor ratings too fast for my taste in recent times as well.
I would add these to your list to talk to-
Dan Patterson
Heather Armstrong
If you're looking to polish fundamental skills before taking cavern,
Doug Mudry
Mark Messersmith
Meredith Tanguay