I have been lucky to have experience not one, but four gushers in my life so far. It is beyond awesome to watch all that liquid jet out while the woman is flying her O's way, way out there.
Got to be careful though, a rookie mistake is to continuously keep her out there squirting. That gets them run down and shaky after the session. Almost like a diabetic wanting sugar shaky.
Also, keep lots of towels on hand.
cya'
Steve