You don't need anything special for PBA leagues. Standard league rules should apply without any problems. You might need some clarifications if you plan on having people move pairs from game to game, or if you have head to head matches in a singles league.
You can use any oil machine that is capable of putting out the intended pattern. A couple of years ago, the PBA used a Kegel oil machine now I think they use a Brunswick one. It's not like every house that runs PBA leagues got rid of their expensive Kegel machine after the switch. The PBA goes to different cities and bowls on all lane surfaces, so whoever said you need to be all Brunswick is smoking something. Now depending on the lane surface, you might need to tweak the patterns a bit if you want them to play like you expect. The PBA has several versions of each named pattern for when they play on different surfaces. Brand new synthetic Pro Anvilane, middle aged SPL's, and older wood will all play very different even if the same pattern is applied.
--------------------Penn State ProudRon Clifton's Bowling Tip Archive