I used to have a Panther in my old Witch craft. I rebuilt that pump and had pretty good luck with it, but it seemed like it would pick stuff up in front of the intake grate so I always had to swim under the boat and clear it. Any way Steve at Panther(pantherjet.com) says a stocker is 30 thousands and depending on HP and wieght of hull determins how far out you can go. Basicly if you stand on it from a dead stop and it slips you have some work to do. When I did mine I used a Devcon epoxy filler to fill the pits in the housing and build it up a little then sanded it smooth.
Good luck http://free.***boat.net/ubb/biggrin.gif