Hi "bwj",
I didn't see a reply to your one comment, " Instead I get a squirt, generally a spray often missing the toilet bowl, followed by 5 or so seconds of a slow stream before it peters out. I have to pump the device several cycles in this manner to feel that I have emptied."
That's pretty much how I started out. And now maybe you have your own technique.
Anyway, now I've learned to do one good squeeze with everything well aimed to hit the bowl; then repeated squeezes to continue peeing like a race horse; then do some more squeezes till flow is done. I give it a couple seconds or more to be sure I'm empty and that's it. Done.
Hope you're doing well and enjoying more freedom from the bathroom & pads.