How well does a good piece stay on?

[Screamin J]

Assuming you have a good quality piece that is fitted well and glued/taped well, how well does it stay on? I've read about people swimming, jet-skiing etc. and not having any problems... my concern though is if I'm with a lady who likes to ruffle hair Would it take a lot of tugging to have it come off?

 

[beemark]

She can be as rough as she wants - if it's attached well, she's not gonna pull it off. You DO want to make sure the perimeter is attached smoothly so that she can't feel the edge with her fingers.