I thought there were only two types of poaches:
1. Opportunistic poach. See ball, get ball. Keep crossing if your poach takes you across the center line. If you change your mind and realize you cannot make the distance, you shout "You!" and go back to your side.
2. Planned/signaled poach. If you signal go, you must cover the crosscourt. Period. No bailing out is allowed. You can call for help on a lob you really, really cannot reach, but that's it. Leave as early as you need to to reach that crosscourt ball.
I had a conversation with a different lady a few weeks ago. She believed that on a signaled or planned poach to "go," the poacher could bail out if the ball was too far away.
: face palm :
So yeah, people have different ideas about this stuff.
-- Random Error Generator, Version 4.0
-- Master Moonballer