Hello there. I've helped many requesters over the years with their hits. Happy to contribute here too.

The general consensus should be to not take TO too too seriously. Most of the experienced turkers moved over to TurkerView, so a lot are the newer folks.

1) Your method is more than fair, it's almost always what I recommend when someone asks.

2) Try to break up the bubbles so its 5-10 on a single page. Avoid doing the repetitive bubbles unless your study actually needs them. People get very annoyed when the same question gets asked four different ways.

The biggest suggestion I'd give is to put a progress bar on the task. I always value those very highly.

Obviously the other thing that goes without saying, the more you pay, the happier people are. If your task is a monotonous bog through 15 minutes worth of bubbles, I'd be disappointed if I got anything less than $4-5 for it.