Bonus balls is ref's call
Pull extra players for penalty--ie=you play on,ref pulls you and closest player on your team for it.
The rule book is on www.nppl.tv
if you want to read it all
But really no ramping is the biggie as far as most locals go.
Make sure you find out about points tho..not sure how they'd do it for 3 man
NPPL is 1 for every live player,3 for every elimination 32 for first pull(I think)and 40 for the hang for a total of 100 points
Hope it helps