not a PL guy myself but maybe 80% of a bet on regulation, 20% on PL would be fine? When i play dogs i play 1/3 of the bet "regulation", 2/3 with OT included so doing the PL/regulation on favs would be similar. Not something i do but GL if you head in that direction.
to me there's not enough games ending with empty netters to follow it religiously but i cant say i've sat down to run the numbers but i will type out loud right now while figuring it out.
had this figured out at one time but basic #'s would probably say to stay away from PL since 48% of games end in 1-goal (reg or OT) and an NHL team only avg about 6-7 empty netters/year.
but, no, i don't play much (any?) puck lines but i could see putting a portion of your wager on that result and the majority on the side to win